The last few times I've shopped at Walgreens, I've messed up my coupons somehow and ended up paying more than I should have. Or the coupons beep and I don't want to argue with the cashier. But today I finally got a really good deal and recycled my register rewards (I had $7 that were about to expire). My purchase:

1 box of Zantac
2 bottles of Pert Plus for Men Shampoo/Conditioner
2 packs of Trident layers gum
1 two-pack of Emergen-C energy booster drinks

Total: $5.48
Register Rewards: $15.50

So, the only thing we actually "needed" from the above list was the shampoo. But now I have $15.50 to spend at Walgreens, and I only paid $5.48 for it (and got a bunch of stuff to go with it!).