Mission Stores
Many towns have Mission stores that are run by local churches or non-profits that accept donations of gently used materials, which they resell at a greatly discounted cost (think $1 to $5). These include places like the Salvation Army and Goodwill. Places like this are my number one choice to drop off gently used toys, because it makes my family happy to know that they may go to children who might not otherwise be able to afford them.
