Cassette tapes can be recycled at most local recycling facilities or donated to charity thrift stores such as Goodwill. Companies such as Green Disk also offer recycling services. Individuals sometimes reuse cassette tapes for arts and crafts.
Check your local phone directory for a recycling center near you. Thrift stores often take cassette tapes as a donation. Cassette tapes can be shipped to a private recycling firm such as Green Disk for a very small fee. Another alternative is to give them to someone to use for arts and crafts. A notice on a site such as Craigslist can make donating cassette tapes easy.