I've been pondering resistor organisation, largely because it takes bloody ages to find one I want.
I think a ring binder (you know, for putting paper in) with polypocket inserts (two bits of plastic, sealed on three sides with holes so it can be put in a ring binder). You could probably use a soldering iron to melt lines into the polypocket, forming smaller pockets then cut slits in one side.
You'd probably need to glue that to some card, or it'd flop over in the binder.
I might try this. I'll see if I can "borrow" some polypockets from work.