[Al Skierkiewicz]

M,
GDC ruled (via Q&A) that the RoboRio does not change COTS status when you remove it from a robot even if you loaded software on it. Other components may transfer to FABRICATED items when you mount/wire them. If you bring each item to your next competition in the COTS state and reassemble it, it will not count towards your withholding allowance. Wires cut and/or terminated (except on certain motor and controllers) are FABRICATED and must count towards your withholding if you bring them to a competition outside of the bag.
Please pick something other than Plexiglass. You now know it shatters and is not suitable for use on FRC robots for that reason. Under R9, damage to other robots, leaving bits of plastic shards on the field fits into this description.