4GoodVibes is offering a sign painting class for adults and children in conjunction with its weeklong Virtual Craft Fair to benefit the Medford Public Schools. The class will be presented live on Facebook at 10 a.m. today, and also be available for viewing later (through April 24). The class is free unless you want to buy a kit; 4GoodVibes has more than 25 sign designs to choose from including some that are Medford themed. The kits cost $15, and part of each sale will be donated to Medford Public Schools. Sign kits may be purchased at 4GoodVibes in South Medford.