Donate: Goodwill, the Salvation Army, and other charities accept small appliances (toasters, mixers) in working condition. Policies on accepting large appliances (washers, dryers) vary by location; check with local branches. Or inquire with local nonprofits that run group homes about large-appliance donations.
Trash: Call your sanitation department or check its website to find out about large-item pickup and local dump sites. Or go to recycle-steel.org to find a large-appliance recycler near you.