Harry L. Swartz Campground, Middle Fork River Forest Preserve, 3-6 p.m. 

FREE! Find many tricks and treats during this all-ages event at Middle Fork River Forest Preserve! Wear a costume to enter a drawing for a chance to win prizes; drawing winners will be announced at 5pm at the play structure at the campground! From 3-5 p.m., enjoy hayrack rides around the campground and hands-on activities. Children must be accompanied by an adult. For more info: (217) 586-2612 or cprahl@ccfpd.org.