Ask HN: What's your quarantine side project? 6 years ago
I've been creating a single track mountain bike trail at my parents farm. Learning how to build sustainable trails, manage erosion, using proper grading on hills, and build fun features has been a great challenge. It's like extreme landscaping and woodworking combined. Then you get to ride your creation. I've been running the "operation" a lot similar to creating software with sprints, testing, and planning -- excepts sprints are hard labor, testing is riding bikes, and planning is waking up in the middle of the night with an idea for a new line.
There's a book by the IMBA (International Mountain Bike Association) that has extensive guides on how to create all sorts of features sustainably.