Ya gotta love the Chicago Bear's dog tag.
I found this at Petco.
Bears undies also found at the Shopko store.
Not photographed, but JC Penny's had Bear's logo mens pajamas.
So far, the cheapest Bear's t-shirts I've found have been at Sam's Club.
I've noticed that some people have landed on this site looking for an inflatable Bear's player lawn decoration. The keyword you're looking for is "Chicago Bears airblown" or something along those lines.
I have searched for these before. Ebay is one place to try.
Also try this page: