I am looking for a way to draw with TikZ something that looks like a random path.
Here is an inspiration:
Is it possible to have TikZ generate something that would be similar to a random path instead of manually choosing points to connect together?
P.S. This question falls into a more general question (that does not necessarily needs to be answered): is there a (meta-)way to use TikZ to draw diagrams as they would appear on a chalkboard during a class. I mean TikZ generates very professional looking diagrams, but it's hard to draw a "random" curve just to express some notion, or draw a "random" diagram or "random" example to explain a notion.