Too many things...

I mostly focus on solving my own problems, and if I find a solution that can serve other people, I sometimes push it out as a product.

1. A watch app for runners that focuses on competing against previous runs, inspired by the rally games of the 90s where you could race your "ghosts"

2. A LEGO deal tracker that focuses on collectors and LEGO investors and is focused on price prediction based on data.

3. A mobile tracker for all the hundreds of components I use when tinkering with physical devices.

...

(Disclaimer: all of them are built using AI-assisted coding, and I wrote almost no code at all, although I have 30+ years of experience as a developer)