Get a free ice cream from Cold Stone Creamery. It’s ice cream plus one mix-in served in a cup (not in a waffle cup like the picture). You’ll be able to print a coupon that expires 7 days after your birthday. This is another favorite birthday freebie of our family’s because you can sign-up the entire family for their free birthday ice cream. 
Last year my husband and I (whose birthdays are three days apart) were able to use this freebie from Coldstone and Red Robin's free birthday burger together for a wonderful FREE birthday celebration! We loved it!