Each year for TCAP testing we have to take down anything educational in our room. Actually anything with words on it has to come down. I found I was spending a lot of money on supplies to reattach posters to the classroom wall. I was so excited when I found command picture clips at Walmart about four years ago. I can now change out posters throughout the year, easily take them down to use in instruction, and then put them right back. The math teacher on my team then wanted some for her room. We looked everywhere....Walmart....Target....Home Depot and could never find them. That's why I hoard....at least that is what I tell myself. You never know if it will be there the next time you want them. I've finally found them on Amazon!
Not a very good picture, but you can see it does its job!