http://www.nps.gov/findapark/feefreeparks.htm -you can get free entry into any of the National Parks on these days this year: January 15, April 21, September 22, and November 11.
http://www.kidsbowlfree.com/ -registration is open for free bowling this summer. Each child can get coupons for 2 free games of bowling daily this summer. An adult Pass is $22.37 for two adults using promo code LUCKY17.
https://www.rcwilley.com/blogs/Room-To-Talk/34/2018/3/7584/Free-Wall-Anchors-at-RC-Willey -get Free Wall Anchors for Furniture at RC Willey stores in UT, ID, and NV for a limited time.
http://takemefishing.org/nfbw/ -during National Fishing and Boating Week, most states offer free fishing days. These are days where anglers are allowed to fish on public bodies of water without a fishing license. Visit that page to see when your state has free fishing days this year, most of them are in the first week of June.
http://www.tryhockeyforfree.com/ -On Saturday, March 3rd, USA Hockey and 400 local association across the country will host Try Hockey For Free Day! Participating locations encourage kids, ages 4 to 9, to come try youth hockey as part of Hockey Week Across America. All locations will have limited equipment available for use.
http://www.thefreeosk.com/find-a-freeosk/ -use the locator on that page to see if your Sam’s Club is participating. If they are, visit the Freeosk Sample Booth at your store to get a Free Ricola or Ricola Sugar Free Cough Drops sample. Participating Walmart stores will have Free Pop Secret samples.