Here is a crafty innovation: turn just about anything into a magnetic chalkboard!
First, prime your surface with Magnetic Latex Primer. Rust-Oleum(R) has a specialty
PRIMER PAINT called, not surprisingly, MAGNETIC LATEX PRIMER. Its color is a dark gray and allows one to create a magnetic surface almost anywhere. The primer can be applied to wood, metal, masonry, drywall, plaster, and more. The primer dries in 30 minutes, after which one should apply a second coat. According to the manufacturer: "Subsequent coats will increase the magnetic attraction." (Oooh-la-la! Maybe it would help to create a romantic mood too?!) Multiple coats means more metal on the wall which helps magnets attach better.