Spaghetti

 The rules for these puzzles are meant to be deduced. One has been solved as an example. I'd recommend trying to solve all the puzzles in a set before looking at the next set, but it's likely you won't have to go back to change your answers.

Most of this was created back on January 28th, 2024, but after finally deciding to share it on November 20th, I replaced a nonunique puzzle in the third set and created the fifth set as a bonus.

SET 1

SET 2

SET 3

SET 4

SET 5