Excercising ideas at the office

Hi everyone!
I have an office job and a girl I work with and I try to get up every hour, on the 1/2 hour, and do something to keep moving throughout the day. We do excercises such as squats, lunges, jumping jacks, wall push-ups, wall sits, walk the stairs, plank, etc. Does anyone have any other ideas or things to do at the office to stay moving?
Thanks!!!
:)

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