My damn lighter! Even though I have a billion of them..whenever I actually need one, I can't find any.
I lose 10 lighters a month and gain 10 lighters a month. They call me the lighter thief. It's unintentional. I would have picked lighter, but since I'm a lighter-clepto, it becomes a wash.
In parking lot i can find my car with my remote control locking, i wish there was some way to find the lost key that way (I think key finders are lousy)!!
I lost my sunglasses one time for 3 days. They showed up on my desk at work later in the week. I am convinced gremlins took them, used them, then returned them later. That was really weird!
Passwords. Since it seems like I have a billion passwords between work and my websites, I typically forget a password from time to time.
I lost a gecko once. He escaped from his cage and I found him outside a few moths later. I also had a gerbil escape his cage when I was a kid. I found him a few days later all sweaty and dead in a tea jar.
LOL, I've gone thru 3 in the past 8 months. Nice to see someone else losing them as well. Actually one wasn't lost, I went into the ocean and had the phone in my trunks ...