Here are some freebies I've rounded up that are good for traditional Tax Day, as observed on April 15:
Arby's - Free Curly Fries today, but you'll need to go to their Facebook page to get the special coupon.
Here are the freebies scheduled for this year's official Tax Day (the day your tax returns are officially due), April 18:
Maggie Moos - Free mini sundae, but only between 3PM and 6PM
Cinnabon - free Cinnabon Bites from 6 PM to 8 PM only. Fight mall traffic and get a free snack!
California Tortilla - free queso and chips on Monday the 18th with a purchase. (They say if you don't want the queso, they'll just give you chips and salsa.)
OTHER RELATED DEALS/OFFERS
Bruegger's Bagels deal - get a Big Bagel Bundle for $10.40 from April 15-April 18.
Free HydroMassage - from April 14-18, participating providers are offering free massages. YMMV - call ahead to schedule and use the locator to find a site near you providing the free massage.
PF Chang: On April 18, save 15% off your take out/dine in order. Happy hour beverages/foods not included.
Plus, Dish Network and DirecTV have free HBO this weekend.
Children's Place is offering 20% off your purchases both online and in the store from April 15-17. If ordering online, use code TAX11 at checkout. The email I received said to print the email and the cashier would key in 111 to provide the discount at the register. Online, they do have free shipping on orders $75 or more.
I'll post more if I find them.