There are a lot of rebates right now, including a lot of free & cheap after rebate products so I thought I'd put a few of them up here:
Real Simple: You should check this one out because it includes a lot of different products. Spend $15 (before coupons) on any of these products and get a $5 rebate. Lots of useful products like lotion, shampoo, toilet paper, etc.
SC Johnson: Limit is three $5 rebates per household. Includes lots of useful great household products and there are tons of coupons and deals that make all of these products free or moneymakers after rebates. Ziploc, Pledge, Scrubbing Bubbles, Glade and much more!
Hasbro/Toys R Us: Up to $69 rebate on many Hasbro games. Combine this with the current promo at Toys R Us where you get a $10 gift card after you purchase $25 in Hasbro games. If you printed out the Hasbro coupons a few weeks ago you can combine these with this rebate. Your total only has to be $25 before coupons.
Nabisco/Planters: $10 rebate when you buy any participating 10 Planters, Nabisco or Easy Cheese products. There are lots of promos on these products so be sure to save your receipts. There were $1/2 coupons in 11-8 coupon insert and you can also print two $1/2 coupons here.