Slime Advent Calendar 2026: 10 Picks from £13.59

Our top picks

Best overall: Funewest Slime Advent Calendar 2026, 12 Pots + Mix-Ins (£23.79). Our overall pick because the listing packs 12 pots across two-toned, butter, foam, glitter, thick and glossy, bingsu and ice-cloud textures, plus over 50 mix-ins such as charms, sprinkles and clay slices. It is a full 24-day countdown with enough variety to keep customising all month, so pick it when you want the richest mix-in set rather than the lowest price.

Best budget: YOPINSAND Slime Advent Calendar 2026, 21 Cups (£13.59). The cheapest calendar in this guide and the one with the most slime cups on the listing. It says it includes 21 cups of butter, crystal and galaxy slime plus over 40 mix-ins (charms, sprinkles and glitter), across a 24-day countdown from 1 to 24 December. The listing says it is not for under-3s and needs adult supervision, so it suits a low budget and a child who already plays with slime.

Best DIY kit: JOYIN 2026 DIY Advent Calendar, 16 Slime + 8 Accessories (£14.44). Our DIY pick and a well-known craft brand. The listing says the 24-day box holds 6 coloured slimes, 2 galaxy slimes and 8 crystal slimes, plus accessories, and that it meets EU safety standards. Choose it when you want a named brand and a clear slime-plus-accessories split rather than a no-name multipack.

More slime advent calendars compared

KAHEIGN 2026 Slime Advent Calendar, 12 Fluffy Pots (£14.99). A mid-budget fluffy-slime box. The listing says there are 24 small doors with 12 colours and textures (butter, cloud, glitter, foam, thick and glossy, bingsu and two-toned) plus over 12 charms, sprinkles and clay slices. It notes the slime is not edible and should go back in its pot when play stops.

JOYIN 2026 Dessert-Theme Slime Advent Calendar (£15.99). The dessert-themed JOYIN box. The listing describes Christmas dessert jars such as peppermint bark and Christmas tree, plus 3D charms (Santa, snowmen, reindeer), a 1–24 countdown, and an age line of 3 and up with US toy-standard safety wording. Pick it when the child likes food-look slime more than plain coloured pots.

MaggicUnicon Slime Advent Calendar 2026 for Girls (£16.99). The girls-theme pick. The listing says each day from 1 to 24 December opens a slime or decoration surprise, with themes such as unicorn ice cream, cotton candy and milk tea slime. Use it when Google-style searches for a slime advent calendar for girls match what the child actually wants.

BAEIDO Fluffy Butter Slime Advent Calendar 2026 (£16.99). A fluffy-butter focused set. The listing says it holds 12 colours of fluffy butter slime, 3 glitter colours, 1 foam ball and 8 boxes of decorative pellets, opened from 1 to 24 December, and gives the age range as kid and teen. It suits a child who prefers soft butter slime over crystal or galaxy cups.

Nhcuijun Slime Advent Calendar 2026, 12 + 12 (£18.99). A split kit with a clear age line. The listing says it includes 12 scented slimes and 12 creative accessories for a 24-day countdown, and gives the age range as 3 to 12 years. The slime is described as reusable in its containers. Choose it when you want an explicit 3–12 age band on the listing.

KYEVIS Slime Advent Calendar 2026, 10 Slime Drawers (£23.99). A drawer-style countdown. The listing and title say kids open a little drawer each day from 1 December and that the box holds 10 slime items, with non-toxic, non-drying wording on the bullets. Pick it when you want drawers rather than flat doors or a vending machine, and accept fewer slime pots than the 12–21 cup kits.

KYEVIS Capsule Vending Slime Advent Calendar 2026 (£24.99). The format pick: a built-in capsule vending machine instead of flat doors. The listing says you align, shake and turn to release 24 capsules across 7 slime variants (including beaded, glow-in-the-dark and buttery), then reseal the slime in the capsules. It suits kids who want a play mechanic as well as slime.

Pre-made pots, DIY kits, girls' themes or a vending machine

Most Amazon UK slime calendars are pots or cups plus mix-ins. Funewest (£23.79), YOPINSAND (£13.59), KAHEIGN (£14.99), BAEIDO (£16.99) and Nhcuijun (£18.99) all follow that pattern, but the slime counts differ: 21 cups on YOPINSAND, 12 pots on Funewest and KAHEIGN, 12 fluffy butter colours on BAEIDO, and a 12+12 slime-and-accessory split on Nhcuijun.

Named-brand DIY kits sit in the middle. The JOYIN 16-slime box (£14.44) and the JOYIN dessert box (£15.99) both use a 24-day countdown with charms or accessories. MaggicUnicon (£16.99) leans into girls' themes such as unicorn ice cream and milk tea.

Two KYEVIS formats stand apart. The drawer calendar (£23.99) lists 10 slime items behind daily drawers, and the capsule vending calendar (£24.99) uses a shake-and-turn machine with 24 capsules and 7 slime variants.

Age, mess and supervision

Only some listings give a clear age. YOPINSAND says not for under-3s with adult supervision, JOYIN dessert says 3 and up, Nhcuijun says 3 to 12, and BAEIDO says kid and teen. Funewest, JOYIN DIY, MaggicUnicon and both KYEVIS boxes only say kid or give no number, so treat small charms and mix-ins as a choking risk for toddlers until you have read the full listing.

Every listing we kept warns that slime is not edible and should go back in its pot or capsule after play. Plan for a wipeable surface and hand-washing before and after, especially with glitter, foam beads and clay slices.

If you are buying for a classroom or party, check the piece count and whether the slime comes in resealable cups. Capsule and cup kits are easier to pack away than loose putty.

Cost per day

All ten listings state a 24-day or 24-door countdown. Dividing the price by 24 on 7 November 2026 gives a rough daily cost of about £0.57 for YOPINSAND, £0.60 for JOYIN DIY, £0.62 for KAHEIGN, £0.67 for JOYIN dessert, £0.71 for MaggicUnicon and BAEIDO, £0.79 for Nhcuijun, £0.99 for Funewest, £1.00 for the KYEVIS drawer box and £1.04 for the KYEVIS vending box. Cost per slime pot can look different: YOPINSAND's 21 cups work out at under 65p each.

What to look for in a slime advent calendar

Read the contents list, not just the Christmas artwork. Two boxes at a similar price can hold 10 slime drawers or 21 cups plus 40 mix-ins.

Check the day count. All ten listings here say 24 days, doors or capsules. If you need a full 1–24 countdown, avoid kits that do not state a number.

Match the type to the child: fluffy butter, crystal/galaxy cups, dessert jars, a girls' theme set, or a vending-machine play format.

Check the age line and small parts. Charms, sprinkles and clay slices are common. Use the seller's age guidance where it is given and supervise younger children.

Plan for mess. Prefer kits with resealable pots or capsules, and keep slime away from carpets and fabric sofas.

If you want a Peachybbies or Smyths exclusive, check those retailers directly. This guide only covers Amazon UK buy-box listings we could price on 7 November 2026.

Check delivery before you order. Prices in this guide ran from £13.59 to £24.99 on 7 November 2026. Order early enough for the calendar to arrive before 1 December.

How this guide was put together

We searched Amazon UK for slime advent calendar, slime advent calendar 2026, slime advent calendar for kids and slime advent calendar for girls on 7 November 2026, then read each listing with a London delivery address. We kept only slime-themed calendars with a named brand, a single live buy-box price for a new item and an in-stock line with no low-stock warning. That ruled out a Generic Halo DIY kit, a CRAZE GLIME calendar showing only 7 left in stock, non-advent slime party-favour packs, and squishy or fidget calendars that are not slime kits. Contents, ages and counts come from each listing. We have not used star ratings or review counts, and we have not opened the calendars.

Prices were checked on Amazon UK on 7 November 2026 and can change at any time. Check the current price, details and delivery date on Amazon before you order.