The Nipyata is a thing and it's amazing. Instead of filling a piñata with candy and shitty plastic toys (see: your sixth birthday), now you can fill it with alcohol. This company, Nipyata, will stock a piñata with nips of Jose Cuervo, Evan Williams, Jack Daniels, Peppermint Schnapps, and Fireball. So you get really drunk, hit a hanging object with a stick, and then get more drunk. It's kind of like more of a throwback and a less dangerous version of “Stump.”
Plus, the pinatas come in different shapes depending on your party's theme – classic donkeys, margarita glasses, tequila bottles, and 21. So basically, you should theme Friday night's pregame “Children's birthday party” and play Nipyata.