I'm a teaching student and I want to share this idea from last year's placement.

Prior to the start of the session the reception teacher placed a cube, cuboid, cone, and a sphere into a bag called her feely bag. In the lesson the children had to describe a solid by feeling it and saying "this has a point, there's a circle at the bottom" etc. The other children had to guess the solid from these descriptions.

A feely bag is naturally a really useful resource which can be used in other subjects too such as science.