Sometimes local transgender or LBGT+ groups take donations for their distribution / share days. A not for profit thrift, or a homeless mission is also a good way to donate your items. Women's shelters too.
There are for profit thrift stores but I do not donate to them. I suppose if you had valuable stuff a consignment store may be an option to sell those items.
Take care to ensure your privacy regardless how you donate your items.
It is good though to donate your unneeded items.
Chrissy