Sometimes rebates can be a pain, and for little things I hardly every do them. That said, Staples rebate program really is easy because you can just submit it right online and they do it through paypal. Because it's so simple to do, I've actually done quite a few of them this past year, and actually have already gotten the freebie deal that they have going on right now.
That is, if you need photo paper all you have to do is print off this coupon. Take it into the store with you and then you can get Staples 4x6 Photo Plus Gloss Paper (60 count), for 10.99, but FREE after you submit your rebate (instructions will print on the receipt).
There is a limit of one per household and this deal will work through 6/23.