Make gems worth something/remove them

[Vitatroll]

Horrible idea: Strip out a toy sword and reinforce it's casing; add a powersource, lens, wiring, and a beaker of plasma; assemble it all into a makeshift csaber (or maybe psaber), the quality of which is determined by the sum of it's parts. No stun, peak at 25 damage or so, with badly made or even average ones having a chance to blow up in your face.