From Christoph's Personal Wiki
I have a great number of hobbies and am always adding more. Below is an incomplete list of my personal hobbies:
- 3D printing
- Internet of Things (IoT)
- Raspberry Pi
- Stamp collecting
- Wine and Gourmet Foods (including wine labels and wine tasting)
- Cameras and Photography (including darkroom)
- Watches (horology)
- Amateur astronomy
- Mountain climbing
- DIY (aka do-it-yourself)
- Personal records
- Vexillology — the scholarly study of flags
- Word collecting — Yes. I'm a geek.
- Symbols.com — Online Encyclopedia of Western Signs and Ideograms
- Ricci Adams' Musictheory.net — a good place to learn about Music Theory.
This category has the following 16 subcategories, out of 16 total.