Encore Creatives' virtual Mad Libs competition is an interactive way to get participants engaged with humor and to fire up their creative juices. The company recommends between 25 and 100 people for the best results, as groups play rapid-fire rounds in the competition, the length of which can be tailored to fit your time slot. The game is moderated by a pair of improv comedians who play off one another — and your participants — to keep the laughs coming. Cost: Starts at $3,000.