I think I must be behind on the sensory bin explosion. I had not heard of these until my dear friend Pinterest brought these to my attention. We made our first sensory bin last night. I started out with a basic bin because I did not really know how it would go over. We used a plastic shoe box and some various glass stones from the Dollar Tree. I collected some ocean animals from a play set that K had previously received and voila! She called it her Ocean Box and loved it. I would like to make more of these and store them in the closet to be brought out when she is bored or needs a new distraction. They are inexpensive and give new life to toys that may otherwise end up at the bottom of the toy box, never to be heard from again.