Cheap$kate: FREE events in NYC this weekend

The Tiger Lillies and Cynthia Hopkins in concert
Come out to Celebrate Brooklyn! tonight with The Tiger Lillies’ musical take on Samuel Taylor Coleridge’s “Rime of the Ancient Mariner.” Brooklyn-based maverick musician Cynthia Hopkins will perform an opening set of seafaring songs and ghost stories. (Thursday night, 7:30 p.m., FREE, suggested $3 donation, Prospect Park Bandshell, Prospect Park West and Ninth St., 718-683-5600, bricartsmedia.org/cb)

Ice Cream
National Ice Cream Day at Ripley’s Believe It or Not!
This heat wave we’ve been having may have you craving a scoop of ice cream, but be careful what you wish for. Stop by Ripley’s Believe It or Not! in Times Square on Sunday to taste some odd ice cream in honor of National Ice Cream Day. Spin the Wheel of Ice “Scream” and down your assigned challenge. With flavors like Lox and Mustard, you’ll have to really work for your chance to earn half off the price of admission. Good luck! Or should we say, good lick?! (Sunday, noon-6 p.m., FREE, Ripley’s Believe It or Not! Times Square, 234 W. 42nd St., 212-398-3133, ripleysnewyork.com)