I will just say the government is petty. Your scenario seems easy but the percentage you lose converting coins in and out would add up. I have witnessed civil

I will just say the government is petty. Your scenario seems easy but the percentage you lose converting coins in and out would add up. I have witnessed civil forfeitures in the amount of; 3k money orders, 5k money orders, 4.5k, 7k cash, 11k cash, 19k cash, 58k cash, 240k cash, assets, bank accounts. Never charged with a crime. They keep a closer eye on this then you would think and FYI TSA gets a bounty on cash collected along with local agency's in most counties. I like the coin idea though. I can ensure you its not the first time I have heard it and ironically the first solution Ive heard from a couple of engineers when broaching the subject.