There are several sites on the Internet that allow you to enter codes and earn rewards as they accumulate. These sites are free to join and if you have patience can be well worth your effort.
Pampers Gifts to Grow If you have a little one in diapers, you can acquire unique codes from the packages of diapers and wipes that you buy. You can also find codes posted on Facebook or other places. Points can be redeemed for a variety of items, such as items from Shutterfly, puzzles, bath toys, and gift cards. I have been saving my points up and will be redeeming them for some toys for my daughter's birthday.
Huggies Enjoy the Ride Again these codes can be found on packages of Huggies diapers and other codes are frequently released on the Internet. Points can be redeemed for free packages of diapers or wipes, crayons, toys, and instant win games. I won a $20 gas card from here once.
Disney Movie Rewards If you have young children at home and a cabinet full of Disney movies you are in luck. You probably have enough points for a great prize already. There is a piece of paper with a code on it located in most Disney DVDs. Enter this code and earn points. Most movies are worth about 100 points. Save your ticket stubs if you see a Disney movie in the theater, this can earn you points as well. The site also sends a monthly newsletter with some points and offers codes periodically. I redeemed the points that I accrued in less than a year and ordered the pictured Tinkerbell CD/Mp3 player for my daughter. It is extremely well made and at no cost to me, the shipping is taken care of. I am already up to 500 points again since redeeming just from released codes and entering from a movie we got at Christmas.
I will post some other sites that I use to accumulate reward points another day. All of these programs are free to join and if I am already purchasing the products, it is nice to get something back from them. Freebies4Mom is a great site that keeps track of released codes from the sites listed above and others. But if you have a little patience, these sites can provide you with a nice reward in time.