I think nostr:nprofile1qqsqfjg4mth7uwp307nng3z2em3ep2pxnljczzezg8j7dhf58ha7ejgprpmhxue69uhhqun9d45h2mfwwpexjmtpdshxuet5qyt8wumn8ghj7un9d3shjtnswf5k6ctv9ehx2aqnz0fd0's method of offering 20% more if they accept bitcoin is the winning one.
So thats a good idea on a 1x transactional deal.
For ongoing serivices, I would mention to them how much their btc stack would be worth if they accepted btc a year ago.
Eventually they take me up on my offer and accept btc.
Hair cutter lady
Pet sitter
Water delivery guy (tip)