https://www.pcgamer.com/fortnites-new-bouncer-traps-send-shopping-carts-skyward/

Fortnite's latest content update adds the Bouncer Trap to Battle Royale, and new Chrome Commando heroes to Save the World. 

Bouncer Traps come in packs of three from chests, llamas and drops, and are designed to "send friend or foe soaring". I'm all about how they work in tandem with the battle royale's new shopping carts, though, which is demonstrated by YouTube person Fortnite Bull here: