If you need a source for villainous plans, look no further than some of the ridiculous ideas originally had by players. Bonus points for recycling a stupid PC plan as a mastermind villain's diabolic scheme without the players noticing.

Transcript

R2-D2: {GM yellow speech bubble} Finally, I have the Rost Orb once again.
C-3PO: It was never yours! That belongs to the Gungans!
[SFX]: Pow! Pow! {fighters firing on Falcon}
R2-D2: {GM} Ironic that I have all this law power, but am stuck in this rimited tin body.
Chewbacca: Lock the cockpit door. Don't touch any metal surfaces. I'll deal with Nute. I have a plan.
[SFX]: Pow! Pow!
R2-D2: {GM} You have no chance to survive. Make your time.
Chewbacca: Why are your PIE fighters still trying to kill us if you're on the ship?
R2-D2: {GM} I am many. I am in competition with myself. The victor must obviously be the strongest. Thus shall we prevail!
R2-D2: {Pete} That was my idea!
GM: Yes, and a great idea it was too.
GM: For a villain.