It doesn't cost much, but oh, what joy it brings. A leash! A leash!
Plus, whenever I walk the dog, I think of this wonderful verse from the Muppets Movie:
Rowlf:Ah, but what could be better than a saucy Irish setter
When puppy love comes on strong?
Or a collie that's classy, a laddie needs a lassie,
A lover and wife gives you a new leash on life.
Kermit: (spoken): Uh, Rowlf, was that a new 'leash' on life?
Rowlf: (spoken): Oh yeah...sorry about that.