Fat Brain Toys Inny Bin

The Fat Brain Toys Inny Bin is a shape-sorting box with a clever twist: instead of rigid cut-out holes, each side of the cube is fitted with elastic bands. Little ones push the six chunky, textured shapes through the stretchy openings, which turns a familiar first sorting toy into a hands-on shape-exploration experience for babies and toddlers from 10 months.

Because the shapes press through elastic rather than slotting into fixed openings, there's no single "right" way to get them in. That's what makes the Inny Bin a frustration-free introduction to posting and sorting play — a child can experiment, feel how each shape behaves against the bands, and discover what happens when they push, all without the dead ends that a strict shape sorter can bring.

Six shapes, each with its own texture

The set includes six chunky shapes — a cube, a diamond, a sphere, a triangle, a flower, and the Fat Brain logo — and each one is finished with its own fascinating surface texture. Little fingers get something different to notice with every shape, so the toy invites tactile exploration alongside the posting itself. The shapes are made from hard plastic, and the box measures roughly 200 mm high by 140 mm wide by 140 mm deep and weighs about 453 g.

How it Works

• Elastic-band openings: Each face of the cube is spanned by elastic bands rather than a fixed hole, so any shape can be pushed through with a bit of effort and the bands close again behind it.
• Tactile feedback: The chunky shapes each carry a different texture, giving fingers something to feel and explore as they grip, push and retrieve.
• Open-ended posting: With no shape-to-hole matching to get right, children are free to experiment and repeat, which keeps the play low-pressure while still inviting fine-motor practice.

Best For

The Fat Brain Toys Inny Bin is a great option for parents who:

• Want a first sorting and posting toy from around 10 months
• Are looking for a shape toy that encourages fine motor skills, tactile exploration and experimentation
• Prefer an open-ended, frustration-free take on posting play rather than a strict shape sorter

It may not be the best fit if you:

• Are specifically after a traditional shape sorter where each shape matches one dedicated opening

Disclaimer

This toy is suitable from 10 months and up. As with any toy that includes small pieces, keep the recommended age in mind and use it under adult supervision.