What new hobby can I take up this winter break?

Last winter, I taught myself how to cook. That was probably one of the smartest choices I ever made. I would like to learn something new this time. I am considering learning to knit, but I am afraid that might end up as most of my craft projects did in school…unfinished and ugly.

The only guidelines I have for this Q are: a) the hobby should not cost me an arm and a leg. Ex: in knitting, all I would need to buy is a needle and yarn…right?

b) It should be something I can learn on my own with the help of youtube instructional videos etc.

c) I would really appreciate if you would expand on the things I need to start the hobby instead of just saying “start a scrapbook”. please don’t tell me to start a scrapbook, i would be horrible at that

d) I know “fun” and “useful” are subjective words, but please keep them in mind =)

Thank you!