Have you tried making your own silly putty?  I learned this recipe 15 years ago when I worked at a preschool.  I still think this is the coolest stuff! Mix together 1 part liquid starch with 2 parts Elmer's  more...

People ask us why our kids are so well-behaved, and we usually start by telling them this part of our parenting style (there are many other components, of course, to raising great kids). My wife and I do not punish  more...