novelty

1 :  something new or unusual the novelty of a self-driving car

2 :  the quality or state of being novel :  newness an uncritical acceptance of novelty as advance — H. M. Jones A toy's novelty soon wears off.

3 :  a small manufactured article intended mainly for personal or household adornment —usually used in plural Disney novelties filled the shelves.

4 :  something (such as a song or food item) that provides often fleeting amusement and is often based on a theme —often used attributively The movie included a few novelty songs.