What can I do with old infant carseat?
My baby has almost outgrown her infant car seat (she is our last baby) and I hate for it to end up in a landfill. I know thrift stores won't take them, is there any other option besides throwing it away? It is in pretty good condition (she was the only one that used it).

Try calling your local Salvation Army and see if any of the needy families there are looking. That’s how my mom got rid of my baby brother’s.
Maybe a local hospital would take it. Sometimes, they donate them to families that can’t afford them.
Your intention are great but its best just to dispose of it because of liability to you if the seat should fail and some other child would get injured, the person that you gave it to could come back at you…..