Cloud magnetic key shelf for car key fob

I'd seen a neat idea where a cloud shaped key holder used magnets to hold a bunch of keys decoratively on the wall (kudos due here: http://www.suck.uk.com/products/cloud-keyholder/?search=cloud). The only problem with that solution is that at home we don't keep our car key fobs on a ferrous keyring and since the metals in the fobs themselves are non-magnetic, we needed a little pocket in the back of the cloud.