If you're lucky enough to have outdoor space and good weather, try foursquare.
Those of us stuck inside can opt for an indoor sandbox...
...or a staircase slide.
If you work in an open office, you have the perfect setup for the classic rainy-day recess game: Heads Up, Seven Up.
A serviceable hopscotch grid can be made with tape...
...but this bubble wrap version is probably even more fun.
Which playground experience would you like to re-create?