At the moment I have so many things in my head all for different things that post it notes will just not do, so I have had to resort to a Swaps memo board so I don't forget any of them!!
This is my quick and easy solution - using a cork trivet and covering it first with white cotton and then a thick polka dot furnishing fabric. The back is also covered with white cotton and everything is held in place by using a staple gun. It only took about 10 minutes and does just the job for now as it is hung up on the wall as I leave the room so I don't forget to look and make sure nothing should be in the post!