Some things in my "to-learn" list:
- Japanese studies
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
I want to work on my personal mind palace when I get the time to.
- Card tricks and cardistry
I like mathematical tricks that "just work" more than sleight of hand but cardistry certainly seems cool.
- Harmonica/Guitar/Music theory