Well, for our mentor's birthday, we each chipped in a dollar, which was then rolled into a tight roll and tied with a ribbon. All of them (I don't remember how many, but it was the same number as how many years he's got under his belt...

) were then thrown into a large bag of confetti...when he realized it, he ended up picking through the confetti piece-by-piece to make sure he got all of it...
Also, we have this running joke that two of our mentors are pedophiles...long story... The girls on the team told each one of the "pedophile" mentors that if they pay more money than the other, that the other one will get a cookie with "(name) is a pedophile" on it (there was a place that made giant cookies with words in frosting on them). What they said they were going to do and what they actually did were two different things...they combined the money they got from the two mentors and got a giant cookie with the text "(name) and (name) love children", presenting it to them just before we left the venue...good times.
Then there's the time we tackled one of our mentors and painted his fingernails...
It's a wonder our mentors stay with the team at all...
JBot