Simple Sentences:
* The unsold merchandise was donated to charity.
* The store had a lot of unsold inventory.
* The author's first book was a commercial failure, leaving many unsold copies.
More Complex Sentences:
* Despite the advertising campaign, a significant number of tickets remained unsold.
* The artist was disappointed by the lack of interest in his work, leaving several pieces unsold at the gallery.
* After the concert, the band was left with a mountain of unsold merchandise.
Figurative Language:
* The politician's promises were like unsold merchandise: no one wanted them.
* His ideas were unsold in the current market, but maybe they would find an audience later.
Remember to consider the context and meaning you want to convey when using "unsold" in a sentence.