The remote detonators reminds me of an old PC game... Meat Puppet. If you didn't complete your objective within a specified amount of time a device implanted in your body would go off... I believe it was called Colonic Detonation. @_@
Atreyu, sorry to hear that your generosity has been taken advantage of. I've had similar problems myself with other items... DVDs, CDs, etc. It seems that there are just some people who don't feel the urgent need to return things even if they've been loaned in good faith. I like Stalker's suggestion of a sign out book - if not for the loanee to sign, then at least for your own reference at a later time. Sometimes it's easy for the loaner to become distracted and forget about items too.
Take it easy...