Element idea #1: Positive Magnet (PMGN)
A solid element which can attract metallic powders (BRMT, BREL)
Elemetn idea #2: Negative magnet (NMGN)
A solid element which can push away metallic powders.
I don't know if these elements would have much use but could definitely be nice just to mess around with or to use as a sorting mechanism.
Apparently this feature was already suggested and rejected so disregard this post*