I have the Michaela keychain (among a bunch of other things from last year's wave of merchandise). There's this chain that sells stuff second-hand, both new and unused, FamilyMart, but only ships to Japan, but you can use White Rabbit Express to have them buy it for you and ship it where you want it.

A few months ago, FamilyMart still stocked a bunch of key straps, key chains, the mug with human Wiz on it and smart phone wallet cases. Dunno if they still do.

good trader +rep