The boy has a zillion toys. They are like bacteria and they keep multiplying, slowly taking over our house. However, about 75% of the time, Isaac can be found playing with his Stack & Roll Cups.
They are awesome. They nest and stack and, if you take any two adjacent cups, can connect to make a ball (hence the "roll"). Isaac likes to put things under them and then check to see if said thing is still there. Over and over and over. He likes to stick his thumb down the hole and see how many cups he can pick up at one time. In the kitchen, he likes to throw them for sound effects. He loves loves loves them. And because he loves them, I too, love them.