If you want to recover any money for your stuff - advertise it - I look on Craigslist to see what might be available - if you have a yard/garage sale, be sure to mention "craft/sewing/quilting" items - those words get my attention!
If you are willing to donate/give away stuff - there are almost always takers.
Mailing stuff can get to be expensive! I think it is reasonable to ask for the cost of shipping if you choose to mail things that you are giving away.
Charity organizations - sometimes they have to be selective due to what items the members are making and what they have available for storage space. Sometimes blessings can become burdens.