It’s a good idea. Do a little digging and maybe you’ll find another option with Testnet coins. I haven’t used that before myself.
Discussion
Thank you! Yeah I'll dig around. Testnet coin is a good idea. Here's an idea; maybe the session has a master private key and I just give each "student" a path. Then at the end if they try to keep the coins I can send.
This is also a secret lesson in "not your keys not your cheese" 😂