Swing by this park run by the National Park Service nearby!
Bethel Woods Center of the Arts (the site of the 1969 Woodstock Festival and ~20 minutes from Callicoon, NY) is hosting its 24th annual Harvest Festival with a food truck court, a farmers market with 80+ regional vendors, live music, corn maze, crafts, special offerings, and more. Festival is free with a $5 parking fee.
About 40 minutes from Callicoon, NY. Enjoy this 3.2-mile hike to see Mullet Falls. Other nearby waterfalls are High falls and Denton falls.