Halloween // Halloween Decor Help?

Hello, I am looking for a specific type of decor, that I havent been able to find on Google. I was wondering if somebody on here would be able to help me find it, because this is my first time Halloween decor'ing.

I can best describe what I am looking for as a motion tracking eyeball decor, that you place on your door or on a soild vertical surface. The eyeball would follow whoever walks by. Ty in advance.