Just made a website which tracks nostr projects I've created that are approximately useful: https://stuff.fiatjaf.com/

Maybe they will be approximately useful to you too.

This is only a little bit inspired by:

nostr:nevent1qvzqqqqqqypzp978pfzrv6n9xhq5tvenl9e74pklmskh4xw6vxxyp3j8qkke3cezqy2hwumn8ghj7un9d3shjtnyv9kh2uewd9hj7qgwwaehxw309ahx7uewd3hkctcqyzynqeq9h5l0nwrfujpnv9ek0654w5pkc2vlpprn9yrjfqyw03hkjljd5ph