Cats. Love them or hate them you can't avoid the fluffy little bundles of joy (or hate-filled spitting killing machines, depending on your point of view). Personally I have two of them, so I'm kind of obligated to love them really...
As any cat lover will know, or anyone who has been anywhere near them, they leave their footprints everywhere; flower beds, wet concrete, clean sheets, clean floors, worktops.... the list goes on. So here's a ring so you can always carry your moggy's little pawprints with you. Awwwwwwwwww......