I'd suggest looking for companies funded by Chicago-based incubators (there are a few, right?) or working from co-working spaces. Go through that list one by on

I'd suggest looking for companies funded by Chicago-based incubators (there are a few, right?) or working from co-working spaces. Go through that list one by one and check each company out. The above has an extra perk: companies who meet the above criteria are probably smaller/newer, and thus more willing to take interns on.