Do you do any exercises at your desk? What are they?

XxQueenMxX

I work at a law firm and I'm at my desk 95% of the time. I do get up and walk occassionaly. We have clerks that bring everything to us, so there is no walking to the file room or fax machine lol.
What are some workouts/exercises any of you recommend, that I can do here in the down- low!

TeaBea

walk at lunch

bathroom squats

Under desk cycle

http://www.amazon.com/Drive-Medical-Folding-Exercise-Electronic/dp/B002VWJYSE/ref=sr_1_1?ie=UTF8&qid=1389651563&sr=8-1&keywords=under+desk+pedal+exerciser