ive played a lot of open mic nights at bars and had a great response. i already have paper handout tags with some pixel art and my links and qr codes and those have done extraordinarily well. collaborative works with other instruments have also gotten great responses. there is some great info in this post and i agree with everything you say here. im going to try to upload my “business card” with this post for all to see thanks for posting this!
Also, to offer a different perspective, you don’t actually have to play shows at all. It’s fine to just be a bedroom producer, and not to get yourself out into venues. There are plenty of ways to make a name for yourself online.