Message board made with a cookie sheet--- so smart for when your cookie sheets get old!
Super simple advent calendar made from a tray! Easy to do tutorial...
Hobby Mommy Creations: DIY Cookie Sheet Lap Desk - Part 1 Making The Lap ... More
chalkboard cookie sheet More
17 Useful Ways to Repurpose Cookie Sheets
17 Useful Ways to Repurpose Cookie Sheets - One Crazy House
old cookie sheet, soup can, and bottle caps; maybe paint the cookie sheet, make the background panel out of scrapbook paper; use fun buttons, dice, scrabble letters, or other nature-themed bobs to glue onto the magnets instead of bottle caps.
Baking pans spray painted with chalkboard paint they are magnetic... So stinking cute and inexpensive.
Instead of throwing them out, paint your used cookie sheets to make wall hangings, magnetic family message boards or whimsical serving trays.