As somebody who has those sorts of projects, all I feel is guilt when I look at the unfinished ones. At least with code you can shove it in a folder and forget about it…
Could be: - a cheap ukulele, tuner, with a link to some youtube lessons - a drawing pad and box of pens with some tips on figure drawing - a whittling knife and some wooden spoon blanks.
You receive the box and give it a try. Maybe you like it, maybe you don't but you can always put the stuff back in the box and return the items and receive another hobby to try without the dread of having a drawer full of nice spoon carving knives that you thought you'd love but are now just a symbol of your abandoned dreams.
1: whoa like a hobby library?
2: that's a hackerspace