Question: free things to do in tucson on your birthday?
Answer: Baskin-Robbins Birthday Club - free scoop.
Blue Bell Creameries - birthday treat (rumored to be a coupon for a free 1/2 gallon)
Cold Stone Creamery Club - buy one, get one free creation.
Dairy Queen Blizzard Fan Club - email coupon (rumored to be a free 16ounce blizzard)