Answered: Are nonfunctional decorations which use VEX Electronics allowed

Assuming that everything is legally powered, etc. Would it be legal to use VEX electronics, such as motors, LCD, LEDs, etc. as legal nonfunctional decoration? The relevant rule in this instance would be <R7d>

Yes, this would be legal, provided the following rules are not violated:

So, to summarize…
Batteries and microcontrollers: No.
LEDs or LCDs: Yes, if wired legally and not modified.
Motors: Up to 10 (or 12 if not using pneumatics), if wired legally and not modified.