Photography as is evident
Programming in general and databases in particular as relates to their utility in the medical environment
A few inventions (actually quite a lot) which I will not be disclosing here apart from this one which I offer pro bono. Using a mobile phone in a cardboard case, a template which can be easily printed and then used to make a phone holder. Scans of the Ishihara test can be viewed on the phone and the eyes tested for red/green colour blindness. A VR headset can also be programmed for the same purpose and perhaps used to test for visual field defects as well.
Music, both listening to it and making. I can’t play a single instrument but I can play the computer and that is actually a very effective musical instrument. (midi files + DAW + Virtual instruments in brief)
Programming is proving somewhat of a challenge but is actually quite satisfying when I manage to solve a problem. We are at a crossroads as regards human machine intelligence. See blog post.