anotar uma ideia: como dizer isso em Inglês?

You are a very creative person and because of that you keep a pile of papers always at hand so when an idea pops up you can jot it down. But wait jot something down? That's another way of saying making a note of something. So imagine you wake up in the middle of the night with a bright idea. So afraid of maybe forgetting it the next day, you jot that idea down before going back to sleep. That's all for now. Take care!