I don’t know about you but I use the heck out of dry erase boards, but I can never find the pens, I always wanted an easy way to hang the pens near the board. Here was my solution, I took my old pair of jeans that ripped and used them to create a jean pocket for my pens.
Old book cover
Old pair of jeans
Place the jeans over the book cover to make sure its big enough, then trace and cut it out, and hot glue the edges. It will be pretty light weight when done, I am holding mine up on my door with shipping tape, and now no more lost pens!