Chalk it up.

My new love... chalk paint. You can make anything with this stuff ! Despite the fact that my fingers look like I have played with tar all night, I made some pretty sweet mugs. How many times do you have family and friends over and have to break out the smelly sharpie pen (although I must admit, I enjoy this smell) and the big red plastic cups to keep track of everyone's drink. Now your guests can have real glassware to use with their own name written on it in chalk. When they leave...wipe off, wash, and it's ready for the next friend!

and the chalk bag just adds a little extra touch (boasting) 
Oh yeah, pretty rad right?