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This advent calendar is not about chocolate, it is about squishing: behind the 24 doors of the Let's Slime advent calendar for 2026 sit 24 blind boxes filled with sensory compounds, slimes and creative extras. Every day in December brings a new surprise, and what is inside a box stays hidden until it is opened.

The sensory advent calendar is made for slime fans of school age and for every child who loves unusual textures and hands-on experiences. For parents and godparents it is an alternative to the usual children's calendar: it keeps hands busy each morning instead of bringing more sweets into the house. Play happens under adult supervision, and the contents are not suitable for toddlers.

The calendar is a large-format purple box printed with slime motifs. The doors come in different sizes and are scattered randomly across the front, so finding the right day turns into a small puzzle each morning. Behind every door there is a blind box.

Inside you find a mix of different sensory compounds, slimes and creative extras. Which compound appears on which day stays hidden until the door opens, and that is the appeal. By the end of the month a collection of very different textures has gathered on the table.

The compounds differ in structure and in their properties. Some glitter, others shimmer pearlescent, change colour or glow in the dark. Sensory add-ins are part of the mix as well.

Squishing, stretching, mixing and exploring new textures helps children settle down and concentrate. At the same time the play supports sensory perception and creativity.

The calendar is built large, leaving enough surface for 24 doors in varying sizes. It is made in the EU, with the manufacturer based in Poland.

  • 24 doors with 24 blind boxes
  • Contents: sensory compounds, slimes and creative extras
  • Properties of the compounds: glittering, pearlescent, colour-changing, glow-in-the-dark
  • Purple calendar box with slime motifs, doors arranged randomly
  • Packaging dimensions: 62 x 42 x 7 cm
  • Weight: 2.84 kg
  • Made in the EU, manufacturer in Poland
  • To be used under adult supervision

Keep the compounds away from carpets, upholstery, hair and clothing, where they can leave permanent stains. Wash hands thoroughly after play. The compounds are not edible and should not come into contact with the eyes, and play takes place under adult supervision.

At 62 x 42 x 7 cm the calendar needs a bit of room as a gift. If you are giving it away, hand it over towards the end of November so the first door is ready on 1 December. As a Christmas or early advent present it makes a welcome change from chocolate and sweets.

What sits behind the 24 doors? Behind each door there is a blind box with a sensory compound, a slime or a creative extra. The contents stay a surprise until the box is opened.

How big is the calendar? The packaging measures 62 x 42 x 7 cm and weighs 2.84 kg, clearly larger than a classic chocolate calendar.

Who is this slime advent calendar for? For children of school age who like slime and unusual textures. It is not suitable for toddlers because it contains small parts.

Do the compounds glow in the dark? Some of the compounds glow in the dark. Others glitter, shimmer pearlescent or change colour.

What should you watch out for during play? Play takes place under adult supervision. The compounds do not belong in the mouth or near the eyes, and not on carpets, upholstery, hair or clothing.

Please note: some lifestyle images of this product were created or edited with the help of artificial intelligence (AI) and are for illustration purposes. The details in this description are binding for the design and scope of delivery.

Tuban

Tuban is a toy maker from Jaworzno in Poland that specialises in creative and sensory play. The brand is known for its DIY slime kits and ready-made Jiggly Slimes, the Tubi Jelly sets that let children craft colourful gel figures, and sensory sand in many colours. A large part of the range is made in Poland. The sets combine experimenting, squishing and creating, inviting children to explore textures, colours and effects with all their senses.

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