I love this idea i spotted while browsing the net. We use alot of tins with the tabs on (file them down first in case they are sharp!) and my brother drinks an awful lot of pop.
I never seem to have enough hangers in the wardrobe to hang my clothes and we were recently given 2 small sized wardrobes for the kids. This is such a great way to maximise the space in a wardrobe that i think i will be doing this with the tabs instead of using them for crafts :)