I have a challenge for you:
A mobile bitcoin wallet, with lightning support, with a full node, that is easy enough for a cashier to use to accept bitcoin at a food coop.
Bonus points if it can be configured in read-only mode so cashiers can only receive money, not send it.
Double bonus if all the money the cashiers take go to the same wallet!
Whatcha got, #nostr? Can anyone meet this challenge?