We have an annual company get together - it's never held on a precise date, but it's sometime in the winter. We usually have about 50-60 people, and we are all basically a huge family so we all have lots of fun planning it. We vote on the theme each year - here's a couple of them:
Wild West - we ordered extra cowboy hats & indian headdresses for those that didn't have costumes
Famous Characters - I was little red riding hood & my husband was the big bad wolf
Mardi Gras - we had extra feather masks, feather boas & beads for everyone
High Seas - there was everything from pirates to the entire cast of Gilligan's Island
Chinese New Year - that one was kind of a dud, but the food was awesome.
Luau - that one was fun. We had a whole roasted pig, and a friend of ours had fresh leis flown in for us. We also had poi. I'm never having poi again.
60-70's theme. A coworker of mine got a mullet wig for her husband. I don't think I've laughed that hard in a loooong time
Y2K - people brought cases of bottled water, toilet paper & wind up clocks...which were handy the next morning when we all had hangovers!
There were lots more, but it's too early in the morning for me to use my brain so we are going to have to go with the short list.
