If you're always losing your keys, you need a regular place to put them. A bowl on a side table works, but it's kinda boring. Why not make your own out of Lego?
To be honest, it's not a particularly challenging build: you just need a base plate -- choose one big enough to hold all the sets of keys that will end up dangling from it -- and a bunch of 3176 Lego pieces. You can find them on eBay pretty easily.