Alright, I've got one.
In the 9th grade, I had a secret santa with about 7 or so "friends". We had a $5 min and a $15 max. We were to exchange gifts on our last day of school before the holiday. Guess who didn't get a gift? By process of elimination (everyone else got theirs and they were nice gifts with thought behind it), I figured out who had my name. She told she'd have it by new years. Since I'm pretty laidback, I didn't put up a fuss about it...
Fast forward a few weeks, during lunch, she gave me her gift. I was like, cool, opened that sucka up, and it was dayum keyring. It had turquoise fringes on it, and a big blue rhinestone in the middle. It was so ugly, dollar store cheap and screamed "I forgot about you twice, so here's something I got at the last minute"...it took so much for me to smile and say thanks. My other friends saw it, shook their heads in disgust. "D@mn," was the general response I got when I showed others the gift.
I even went the extra mile and put the keychain on with the rest of my keys and other keychains. (I already had too many keychains, what would I need another for?)
A week later, the gaudy blue rhinestone fell off! Needless to say, I didn't ask her to do Secret Santa again.