So my son was asking me what toys I used to play with. I responded with Atari (2600 of course), Micronauts, Star Wars action figures (can you believe it is 30 years old this year!! Damn I'm old!), GI Joe, Stretch Armstrong, Big Wheel, Green Machine, handheld football, basketball, and baseball by Mattell, Smash em' up Derby, and SSP Racers among other things. But one toy I couldn't remember the name of was this building toy that consisted of colored clear squares that were probably 3"x3" with a hole cut in the middle and notches on the sides (I think) They were about 1/4 inch thick. Does anyone remember what they were called? Feel free to post your fav. toys from the 70's!