Stack and stack and stack with the Nest and Stack Buckets from International Playthings. This Nest and Stack Buckets set from International Playthings is a stacking and shape-sorting activity in one. These nest and stack buckets include a shape sorting bucket with a handle, the 10 stacking cups have numbered bases with images. The number of images on each cup matches the number written on the cup. Build a tower from 10 (biggest cup) down to one! Or lay them out on the floor and count from 1-10! This toy can also be used in the bath. The four shapes have small holes for water sprinkling activities. Stack them up to make a tower over 3' tall.