>>3844745There are some fun ones you can get for less than that
>prism filters with kaleidoscope effect (Hoya multivision etc.), comes in different numbers and shapes>split diopter>diffusion filters (the crazier ones, like Hoya Fog or Softener, not just a promist)>cross/star filtersI'm mentioning the Hoya names cause I'm more familiar with them, but Tiffen, Cokin etc. have similar ones.
Then there's some crazy and weird stuff from the film days that can be had for cheap:
>Hoya Pulsator>Hoya AndromedaAnd a funky oddity are the variable colour polarisers. Check Cokin's Varicolor Red-Blue (the most dramatic), they also come in Blue-Yellow.
Mind you they can be actually really useful with WB adjustment in post (and not replicable by editing), but they can get really crazy when turned around the "neutral" point, straight out of camera too.
