Pool-themed dog collars? ("I just dogged the 9 again..." and such)
I've heard some people gripe about the bridge scratching their stick,
some insert that protects the cue or helps elevate it beyond the usual bridge level?
A little plastic "ID window", like what you see in wallets, that a person can glue onto the case? Then they slip in something with their name underneath it. I'm thinking this either deters a thief, or it backfires and the case gets stolen anyway, but they tear it off and partially ruin the case.
For a little more, instead of a window they can get their name (or whatever else) directly burned into a patch of leather that can be purchased and glued/sewn on?
Some kind of portable scoring thing?
Does leather work as a mousepad?