Gardena
My dear neighbor Erik Jönsson works for Gardena and from him I have got a miniature connection for hoses. This I use as a keyring for USB memory stick and key that unlocks the wire I lock my computer with.
This Gardena tool has been the most popular item on the IGF, and I have many requests for one. The only recommendation I can come up with is to get an as nice neighbor as I have.