Specifically: Collecting Hobbies.
I find that following my ADHD hyperfocus until the next shiny thing comes along has led to a massively diverse array of introductory knowledge and mediocre skills (as well as a garage stuffed full with bins of unfinished projects). Specifically in the last two years I have dabbled in:
home automation (incl. Node Red, LoRa, MQTT on Raspberry Pi)
weather stations
terrariums
greenhouse climate control
making wooden boxes
Minecraft
mechanical pencils
fountain pens
notebooks
bookbinding (custom notebooks)
Dungeons & Dragons
I realized years ago that I had to embrace the change and I try to dip my toe into any hobby that appeals at the time with as minimal monetary outlay as possible. I find interests tend to resurface after a while, and the skills/tools/materials for one can generally be used somewhere else down the road.I have found that I learn something and increase my skillset with every unfinished project. That leads to, over the long run, being able to get more accomplished in less time on newer projects. The real treasures are the friends you made ^h^h^h^h^h things you learned along the way.