Maybe not the most useful thing, but certainly useful and the coolest thing I built is a code formatter for the m language (also known as powerquery). At the ti

Maybe not the most useful thing, but certainly useful and the coolest thing I built is a code formatter for the m language (also known as powerquery). At the time there was only daxformatter.com but no formatter for powerquery. So I wrote one and some people are using it. Imo it has a very nice ruleset to format code that I would prefer to formatters in other languages that I use myself. People reported issues and I took care of every single one of them. It's not much but it's honest work.