H.
Hi,
I know you said western burbs but... I love just getting a room downtown Chicago and maybe going to Navy Pier,or Millinium park, something like that. Then the next day try the children's museum. My son loves that place.
There is also a new indoor waterpark at the Sheraton right next to Arlington racetrack. I haven't personally been there but my friends have and they like it. I believe it's like 200.00 for a family of four. That includes the room, waterpark, and I believe pizza. Have Fun, H..