For the tipping use case:
nostr:nevent1qqsra2ukq0qysshn7946a46pgskjxhls3ewp8vnwufmvsmtlqh3l0ucpzemhxue69uhk2er9dchxummnw3ezumrpdejz7q3qpplsxd3qcr9nqqcmwf23kqt930lng3t0qg40n77grullapyhsp7sxpqqqqqqzr3u...
Faucet is good too, but for hotel tipping gotta be different codes as there might be more than one unclaimed tip with different amounts.