Martha Stewart has a set but its a bit pricey. I've also seen it on Pinterest and decided to do it myself. I found some mason jars at Walmart and I ordered Chalk board stickers off Ebay.
It's a quick project and the jars come in handy for other things as well. I think I will make a few for my crafts and jewelry.
I found a link that sells 3 jars with stickers ;) 3 Clear 16oz mason Jars with Chalkboard labels
Love, Peace and Happiness