The purse/pocket scavenger hunt is always fun! Everyone can play, and it's amazing what people will come up with in the depths of a purse, briefcase, or pocket! You make a list of 10 common or not-so common items (i.e. comb, paper clip, calculator, Wal-Mart receipt, toenail clippers or nail file, #2 pencil, chewing gum...) and ask for the items one at a time. Whoever has the item raises their hand or stands. Whoever has the most items gets a prize, the most unusual item gets a prize, etc. It's pretty entertaining!
ICARE (BINGO) works, too! Instead of B52, it would be I52... You can make the cards on your computer and print them out. M&Ms or peppermints are great for the space markers.
Hope that helps!