A few months ago on Club Skinny Skinny Cow the top award to redeem was a $50 gift card of your choice (from a list). I chose Target.
When you sign up you get 500 points and earn points for watching their commercial, tweeting, and uploading photos.
I happened to spot this Mossimo dress
It was $24.99 but on sale for $17.48
Then I used the Cartwheel app for Target and it ended up being $13.48
( but still free since infused the gift card)