Lawn gnomes are cheerful and yet...creepy. They are garden dwarfs whose origin was in 19th Century Germany. Even though they are best known as happy little garden statues that are protectors of our prize begonias and daisies, they are also considered the object of pranking or "gnoming" someone.
I even devoted a horror short story in my anthology, "Don't Go There! A Flash Horror Anthology" because, well, you never know what they're doing at night while you're sleeping....
Admit it, they are a bit unsettling.
Keep your eyes open!