There were predecessors to Legos. Check out thebrickblogger for some geeky kidstuff history. My brothers and I had Meccano for building mechanical contraptions complete with wheels and pulleys, plates and girders, nuts and bolts. For kiddie stuff we played with rubber Minibrix. If you licked 'em before fitting them together they'd make a cool puck popping sound when pulled apart. It was our junior genius theory that spit held everything together better. I still rely on that at my age. ha. It was only natural I laid on the floor years later with our kids to "help them" with their Lego projects. Okay, sometimes Dad would be up late after they'd all gone to bed finishing a way cool idea. Licking does nothing for Legos incidentally. A grandson has taken this stuff to a whole other level. We're all under orders "no more Legos for Christmas". If I can find this voyageur canoe kit I'm gonna bust the no Legos for Christmas rule. Again.