A friend of mine, Troy, showed me this a while ago, and I thought this is probably one of the best office tips EVAR.

Have you ever been designing at the white board and accidentally wrote on it with a permanent marker? We use sharpies all the time for User Stories and it happened to me and I thought I was forced to live with the blue blemish on my whiteboard forever. Not true.

Take a regular white board marker (preferably the same color as the permanent marker) and write right over the top of the permanent mark. Let it dry and then erase as normal. The white board marker’s marks lift off the permanent marks!

This is especially useful for Kanban Boards.

Hope this helps someone as much as it has helped me.

~Lee