In no particular order of priority/importance:
1. Start learning guitar. This is in the works...I have a subscription with JamPlay. Currently working on a "beginner electric guitar" course...
2. Become a better bass player. I have been playing bass since late '91; mostly self-taught. Haven't played in a band in years. Looking at improving all aspects of my playing...decided to go back to my roots and play along with recordings again (ZZ Top, Deep Purple, etc.) as a way to kick-start myself, working pretty good so far.
3. Get over technophobia and delve into recording and other software. I need to try my hand at learning recording sotware, drum software, etc. I have a lot of ideas (for bass at least) that I'd like to get recorded to see if they sound as good in playback as they do (or don't) when I am playing them.
4. Get a better grasp on all of the functions/capabilities of my gear. Instruments, effects units, amps, oh my...mainly instruments and amps though...I don't en own any effects for guitar, and probably won't for awhile...I'd like to have a reasonable grasp on the basics of guitar playing before even thinking of utilizinf effects...
5. Play in public for the first time since 1996. It's been eighteen frickin' years...if I decide to do this, it will be on bass (unless I turn out to be an "adult prodigy" on guitar, ha ha), most likely a solo/looping/bass-n-drums thing. I am not a really big fan of that, but bass is my primary instrument, so...