I remembered two other things I've discovered and have fallen into disuse....
One is that I was living with my boyfriend and filled my whiteboard with things that I didn't want to erase, so I slammed it back into its brackets at my parents' house tackboard-side out. Posties became my friend but I used the cheap ones that didn't hold, so I drove cheap-useless sewing pins through them to hold them to the tack-board.
I also used the same pins to hold my necklaces to a cheap corkboard.
(Both the posties and the necklaces are boxed up right now.)