A toaster oven was a type of electrical appliance. This appliance was a hybrid with features of both a toaster and an oven.
In 1986, a garbage man had a fight with his significant other over paying sixty dollars for a toaster oven. He refused to pay for the oven. The next morning, he was speaking with his colleague about this incident when the HMS Bounty landed near them. (Star Trek IV: The Voyage Home)