4GoodVibes 2 and other merchants are organizing the first South Medford Holiday Stroll on Main Street. This is more than just shopping. Write Santa a letter at Swap it and then walk over to 4GoodVibes 2 and mail it in the Santa mail box. From 1:30 to 4:30 p.m., join 4GoodVibes for a mini gingerbread house decorating activity. Buy tickets ($8) ahead of time or when you arrive. From 4 to 6 p.m., there will be cookies and caroling at Corner Studio Yoga.