Last year, I wrote a post about swap sites. After I published the post, I found more sites which offer children's items. The list below includes sites that facilitate the exchange or sale of used children's items, among other things.
Location
Various locations throughout the US
Service
The following sites allow parents to swap children's items such as clothes, accessories, toys, gears, books, movies, CDs, etc.
Cost
Cost
Free, no membership fees are required to join
Websites
Disclaimer: I was not compensated to write this post.