BIP38 provides a solution for your backups. My paper wallet backups are spread all over the world. A lot of them can be found in public locations.
Just print it with larger characters so it's less likely to be blurred or defaced to a point where it can't be seen.
And it is always a bad idea to trust people witheven these small amounts of money as there can be problems that lead to them just taking the money from you.
Is there a script to brute force the possible combination of characters that look similar in a private key?
I can try and get in it for you for a 5% fee if there's no other option for you to use (although I doubt my trust will be high enougth to be accepted).