I was inspired by the parent's magazine version (which I can't find a pic of), but here is another example: http://www.amazon.com/Childrens-Factory-INFANT-TODDLER-PLAYSPACE/dp/B000NNM0PC/ref=sr_1_5/104-5826653-3848726?ie=UTF8&s=toys-and-games&qid=1194544385&sr=1-5
I want to make some of these climbing blocks for my daughter (I am not willing to pay over $100!) and I have the foam--my old 3" memory foam mattress topper-- but, since it is a strip of foam and not the dense foam I assume these other blocks are made out of, I'll need a structure within the blocks... I was hesitant to use wood because of the weight, but now I'm thinking that some thin sheets of wood wouldn't be such a bad idea. Does anybody have any suggestions for a cheapish material I could use? Or any other suggestions? Opinions? Thoughts?