A typical theme is redemption. Sometimes the finder might be someone who has made mistakes in the past, but by doing the right thing of returning the lost item, they redeem themselves. Also, friendship can be a theme. As in the story where the girl got her doll back and made a friend. People are brought together through the lost and found situation.
One common theme is hope. People hope to find their lost items or loved ones. For example, in stories where a lost pet is found, the owner never loses hope. Another theme is kindness, like when strangers help in the search or return the lost items.
It could be a story about a dog that got lost. The owner was probably very worried. But then, something happened that brought hope. Maybe the dog was found by a kind stranger who was able to reunite it with its owner.
The dog might have strayed too far from home while chasing a squirrel or exploring. Maybe it got disoriented. Luckily, someone kind noticed it and checked its collar for an address or contact number.
Here is one. A man lost his wallet on a busy street. It had all his important cards and some money. A homeless woman found it. Instead of taking the money, she waited at the spot for hours. When the man came back looking for it, she returned it to him. The man was so touched that he helped the woman find a job.
Well, that depends on personal taste. Some might find the ones with a touch of mystery most interesting, like the story where a character finds a strange object and has to figure out its origin. It keeps you on the edge of your seat.
Sure. 'The Lost Wallet' is a great one. A man loses his wallet filled with important documents and some money. It gets found by a kind-hearted child who returns it to him, teaching a lesson about honesty.
One example could be 'The Time Traveler's Wife'. It's a novel full of love. The main characters face many losses and separations due to the time - traveling aspect. But in the end, they always find their way back to each other in some form. Their love is so strong that it endures through all the hardships of being lost in different times.