This is the big area we've increased our spending this year, with our income going up and our move.
Total this year for all hobbies: $2800
This included brazilian jiu jitsu for husband, hunting for both of us, a new tent and other camping costs, a bike for each of us, a kayaking trip, and setting up our garden. (New house, built raised beds etc). (The garden of course resulted in tons of produce).
Projected next year will be WAY lower for garden (sub-$50), no bikes or tent, probably no kayaking. Will still have the BJJ cost ($120/month, new rash guard a couple times a year $20-40 per), the hunting (~$100-200/yr), and a hiking pass ($36/yr). But, costs could go up if I join something additional.
Travel I guess counts as a "hobby" but I separated the categories this year: ~$4k
Not bad for a long weekend in BC, a week in Colorado, and a week in Maui.
Travel is also way up this year from previous years (generally, sub $500). How high it is next year depends on if we are able to conceive or not, mainly.
ETA:
I forgot to include all our free hobbies! I read a fair amount (34 books this year and counting), and get those through my library (overdrive mainly). We weight lift, and bought all our garage gym equipment (or built it!) a couple years ago. It's paid for itself vs gym dues a LONG time ago, within the first 4 months we set it up. We also hike a lot, the expense there being a trail head pass ($36/yr) and occasional shoe replacements. We walk the neighborhood a lot, and run (again, some shoes). We listen to free podcasts while commuting. Sometimes we'll watch a netflix show, I just borrow my mom's plan so it's logged on correctly when she visits (we've offered to pay, she doesn't want us to).