Play Blocks is a set of eco-friendly flat cardboard pieces that can be popped up and folded to create three types of block shapes: cubes (14), triangles (5), and rectangles (2). Once constructed, the blocks can be used to stack, count, and build monsters, trains, robots, buildings and more. Designed with such playful designs--wheels, polka dots, stripes--and attractive child friendly colors of blue, white, red, and black, players of all ages are immediately drawn to them.

In our experience, "constructing" the cardboard shapes and positioning the shapes into the sleeves was too challenging for our 4 ½ year old testers. Happily, their 7 and 9 year old sisters were ready and willing to help. Once the blocks were set up, the boys had fun working with their 7 year old sister to fashion silly monsters and alligators with sharp teeth. The only issue impeding their play, was needing more blocks. After the effort of popping up the blocks, you will need to "un" pop a few to fit them back into their box. Be prepared to have a storage bin handy... with room for another box-full or two!