Target's big car seat trade-in event is coming up. It's a great way to get money back on something you may not be using anymore.To participate, first sign up for Target's rewards program, Target Circle.Then, bring in an old car seat to your local Target in exchange for a 20% bonus that you can put toward a new car seat, stroller, or other select gear for children. The bonus can be used twice.Target will accept any car seat regardless of condition — even if it's damaged or expired — because they're recycling it anyway.The trade-in event runs from April 14-27.You have until May 11 to use your bonus in store or online.For more information, click here.