play a prank
As if we even need to include this one, the easiest way to have fun in the office is to pull a prank on a co-worker. (This is the ban.do
team sticky noting founder Jen Gotch
's office.) Do it Thursday night and reap the benefits Friday morning, be sneaky over your lunch break, or get the person who leaves the first on Friday night and let the anticipation build alllll weekend long.