Here is what one box of chalk, painter's tape, 4 wine glasses and chalkboard spray paint (FYI- went to Target, and Walmart before finding it at Michael's)
Wrap the painter's tape around the stem- found that overlapping helps prevent bleed through onto stem- also spray paint directly at base.
It was fun to write a b-day greeting on the bases.
My final product picture didn't turn out- so here is the above site's final product picture. Wish I could stage my food, DIY, etc as good as this lady- her pictures are really pretty.
This was a fun craft, easy and rather reasonable b-day gift. She also did beer glasses too.