Review on 14-Piece Heavy Duty Metal Bookends For Shelves - Black Non-Skid Book Holders For Office And Home - Large 6.5 X 5.7 X 4.9 Inches - Compatible With Various Sizes Of Books - HappyHapi by Doug Hammett

Air dry clay won't stick to this very well. I ended up using mdf board with crazy glue and that worked great. A little too well actually. I had to reposition one of the boards slightly and it wouldn't budge even a few seconds after. I then scored up the mdf board and put the clay on. The clay doesn't stick to it as I said so cleaning up the residue clay was easy with a little alcohol. Paint didn't stick either so again, cleanup was great. I love these for diy bookends. I'll be purchasing more for future projects.