Hm, a water balloon launcher on a gauntlet perhaps...
I still think my old idea of a "Bee Bee" gun would be fitting. The gun would be loaded with canisters of bees gathered from Evergreen Meadows. Ah, however, (I'm brainstorming rn) Lukas may get sued for animal harm.
How about an entirely new class of weapon? The water balloon idea made me think of a heavy artillery type of weapon that must be loaded, so ammo must be crafted and stocked. Similar to how we craft gyrostabilizers and TNT and the other one-use gadgets for battle.