Create stuff, damn it!
I constantly think about games.
I like to do random design exercises during my downtime at work, in-between game matches, or on a lazy Sunday afternoon. Merge two genres. Expand a simple game. Think of novel mechanics and take them as far as possible.
Sometimes I write them down in my notebook.
Sometimes I get off my lazy butt to actually try one out. Hopefully having somewhere to catalog them will be a forcing function to produce more.
https://cnava.itch.io/