There's probably even a Chalkboard Hubby out there somewhere, with a qrocery list scrawled across his chest...milk, eggs, butter.
I found a great item to use with the various chalkboards, that is much more bright and colorful than normal chalk...can't be rubbed off (My Grandbabes think that you write something on the chalkboard just so they can wipe it off immediately)...and is removed easily with water. This product is used by Starbucks and other retailers on their chalkboards and is called Chalk Ink. Here are a couple boards showcasing the vibrant colors.
These have already been added to my shopping list for the weekend.
All the best,