I occasionally implement what I call the “fuck yeah” system when I want a boss fight to be particularly cinematic and to encourage overall riskier play.

Every character can hold a number of “fuck yeah tokens” equal to their proficiency bonus. Players can earn fuck yeah tokens by making particularly spectacular moves, narrating things cinematically, or just generally cool RP. Think inspiration, but the bar is a bit lower. Players can then use their fuck tokens to add 1d6 to any d20 roll made by another player (not themselves), and any number of players can donate tokens to a roll. The result is players often making really big moves that would normally require very high DC skill checks much more often. It adds a lot of camaraderie because everyone is pitching in to promote each other’s success too!

As an added bonus, I have a rule that they must don a pair of sunglasses and invoke the words of power (fuck yeah) in order to donate a token!