I make my own hotsauces and chili salsa’s. You can go crazy with recipes, while it can’t really go wrong. I also give them to friends who love them.
A friend of mine makes his own ciders (apple or pear). Very cheap to make with minimal investment. Easy to learn, hard to master.
I’ve been looking into making cheese, which apparently is also easy to do, and only requires some special cloth so low investment too.
If you’re not into food/drinks; my gf crochets and knits. She learned it from youtube, and can make some cool stuff!
Ordered a subway sandwich, ate the whole thing, now in regret…