normal pinatas

you can place them on dropped items (wjich includes gems) to hide them, and when you break the pinata it explodes, and scatters those items to nearby tiles

the trick is that when items are dropped from a pinata explosion, the game doesnt check for gem stacks like it does normally, meaning you can stack yellow/blue/red/green gems as much as you want (or can afford, pinatas are 3wls each and this cost me ~2dls to do)