I LOVE groupon!! I just found out that if you go through shopdiscover, you get 15% cash back.
My faves I have bought...
$55 for the annual pass to Museum of Science & Industry. Admission for one day for my family is $50 without "extras" - omnimax, sub, special exhibits - and for $5 more I get to go the whole year WITH the extras!
$18 (x's 2) = $36 for 4 of us to go to "Jazzin' at the Shedd". We got to go to the Shedd Aquarium at night - SUPER cool - heard great music - AND had a great spot to see the fireworks from Navy Pier. We did not even know this event existed - it will now be an annual tradition.
$25 for $50 Gap gift certificate
$39 for a 16 x 20 canvas photo (inc. tax and shipping) - regular price is $125.
$10 for a $20 ticket to
Lego Fest at McCormick Place (this was through buywithme, not groupon). I paid $10 for 2, since I had a $10 referral credit
I also check
http://www.grouponroundup.com/ - it lists all the national groupons. There are many (like the canvas deal - found that on here) that are online items. Even though it is offered in another city, you can still buy and use them.