TB's not welcome
I have had several TB's placed in caches, (not mine) that have been "lost". I have seen the cache owners post to the cache page, " this cache is not a good place to leave TB's". ( or something to that effect ). If cachers don't leave em they can't be muggled. Or as TRF said. Make it a micro. ( then there are micro chip coins ) Good luck. Must be a good cache if it gets visited often.
Why not live life like it is your last day....instead of pretending to be a member of the Peter Pan Club and believing you will be around forever.