Interlocking Sound Cylinders

If you have a preschoolers and am not sure how to keep him/her entertained, how about these Interlocking sound cylinders? They’re each loaded with samples via software and can be combined in a stack to create a cacophony to drive you and your family mad or used individually. I wonder what are some of the other more practical uses, but with parents always looking out for the next big thing, the Interlocking sound cylinder would make for a pretty good toy.