email them at donations@broadwaycares.org and ask.
Last year they accepted nothing. They have no storage space apparently and are very picky about what they might accept. They would not even allow me to bring the theatre books to their table the morning of.
You could also try emailing any of the unions who have tables like Dramatists Guild or SDC.
You can also donate your stuff to any of the many Housing Works locations in the city, which is a better tax write off for you as you decide its value, and which also is a terrific charity providing fantastic HIV support and housing.
If you strike out with Broadway Cares, email send us an email at BroadwayMakersMarkeplace@gmail.com
No tax receipt, but know that your stuff will go on to a loving home, and that part of the proceeds go back to Broadway Cares.