That is awesome.
So simple.... trots off to buy some Lego.
Saw this last night - Lego is just an awesome product and an even better company: LEGO tracks down rare set for boy with Asperger's | ksl.com
Just finished building mine...
I had tons of it as a kid. Loved it to bits. Pride and joy was a 3 foot long F1 car with 6 working gears and suspension. Then silly muggins here sold it in his late teens :(
At least I've started buying more now for the kids :D
On the subject of DIY key racks I posted this a while back:
I have a loft full of Lego, too. Actually separated out into three boxes as to whose it belonged to in the first place! And a folder full of instructions.
One day I will build all the things back up.
Meanwhile, I might just build a key rack :)