Amplifiers that boosts elements, not clone it (AMPL). Jelly, soft and mushy but still solid (JELY). Rubber, bouncy (RUBR). also maybe even Motors and Hinges (IMPOSSIBLE).
Ace We already have several elements that do that to varying degrees.
AMPL- Sounds like something useful, have to define boost though JELY- Yea, if you want physics, try OECake RUBR- Might be interesting to see if it's possible to make particles bounce.
Motors and hinges would go into the moveable solids bin. There are several motor simulator saves around though.