Eye- Spy: Our first year we took photos of teachers' eyes (about 15-20 teachers), called it Eye-Spy and sold guess cards for $0.25/card. At the end of the week the winner with the most correct guesses won a gift certificate.
I-Shadow: The next year we did I-Shadow. We took profile pictures of teachers heads and blacked them out (like we did we when we were in primary school). Guess whose shadow profile this is.
Who Nose? - This year, same idea, but with photos of teachers noses.
Students look forward to see what we will be doing every year and they love guessing which teacher belongs to which picture.
Prizes always vary, but gift certificates (mall, movies, stores) are always a favorite!