5 Things to Do: Howl-O-Ween at the Morton Arboretum, Haunted Flea Market, Boo Bash & Midnight Mixer

Howl-O-Ween at The Morton Arboretum (Lisle): Bring the whole family, including your dog, in costumes for Howl-o-ween from 9 a.m. to noon Saturday, Oct. 31 at the Morton Arboretum. This event will have a dog costume contest, trick-or-treating, pup cups, pet-friendly vendors and more. Visit mortonarb.org for more information.Haunted Halloween Flea Market (Wheaton): The DuPage County Fairgrounds will host the Haunted Halloween Flea Market from 3 p.m. to midnight Saturday, Oct. 31. Admission is $10, ages 12 and under are free. Click here for more information.Horsin’ Around Day: Trick-or-Treat at Danada (Wheaton): Trick-or-treat with the horses at Danada Equestrian Center from noon to 4 p.m. Saturday, Oct. 31. Vote for the horse with the best costume. Admission is free and this is open to all ages. Click here for more information. Boo Bash Moonlight Mixer (Lombard): Celebrate Halloween at Dave Buster’s with the family-friendly Boo Bash from 10 a.m. to 1 p.m., followed by the Midnight Mi