Some things in my "To learn" or "Getting into" list:
Like many otakus, it all started with "I want to understand anime without subtitles" for me. Thanks to Anki and Remembering the Kanji, I have been able to maintain a good pace.
This has improved a lot because of cubing but my handwriting with non-dominant hand still needs a lot of work.
- Memory tricks
Currently reading Remember It! by Nelson Dellis. A while ago, I tried reading Secrets of Mental Math by Arthur Benjamin but couldn't complete. Learned some very cool tricks though. I want to work on my personal mind palace when I get the time to.
- Card tricks and cardistry
I know a few card trick routines, shuffles, and mathematical tricks from Scam School, Martin Gardner and YouTube but I want to learn more of it. I like mathematical tricks that "just work" more than sleight of hand but cardistry certainly seems cool.