a fold-able pencil. just wrap a small rubber band around the hooks, break a pencil in half, put the pencil in the holder, and its finished. https://www.youtube.com/watch?v=xeefn7h9S4Q https://www.youtube.com/watch?v=VNjkKH4EFgA

Test#7 has a large clip on it (originally designed to be put on a watch strap but it kind of failed), Test#8 has a stopper so it does not smash your fingers(it also works as a grip) but Test#7 is also designed to not smash your fingers.

(just don't even ask, I got board)