The last few months I had this problem: both my father's and mine key rings didn't have anything characteristic on them so we kept taking the other's keys and not finding the right ones most of the times. So, I had to make keychains. Aaand I thought I'd make a pair that no-one would ever confuse.
Yup. It only started with Hayate, but then I thought "...why not?" and added Roy and Riza. As my father said "It's a couple and their dog, isn't it?" (damn right, dad!)
Anyway, on to the keychains.
Then, my friend asked me to make her a Winry, so she can have her on her bag next to the Ed keychain she got in Sweden. Dorky times! :D