Have you heard yet of Groupon.com? I LOVE this website. You tell it what city you live near, and every day there is a different deal available. Let's be honest, I don't buy many of their deals, but the ones I do get are awesome!
I got $80 worth of yoga classes for $20. I got a $100 car check-up for $25. I have a month of unlimited activities and classes at Gymboree Play and Music for $20 plus a waived enrollment fee if I decide to sign up after my month is over. I got a $20 Halloween River Cruise for $7. I mean come on, that is a ton of money I saved!
To sign up, you just go to here and enter in your email address and a password. Then select the area you live in/near, and ta da! Every day you will get a new email with a different deal. If you don't want to receive a daily email you can disable it and just check the site, but I highly recommend the email just in case you forget to check it one day and miss something great. (Yes, I have done this and kicked myself for it many times.)
Okay seriously, go check it out!