Have you ever shot on expired film? The images that come back are always so dreamy- same with overexposed shots. Top right and bottom right images were both shot on expired polaroid film. The first picture of Cannon Beach is overexposed and I'm not sure what's going on with the one below that but it's amazing.
Image 1 via roam cloud highway, Image 3 via dust breeding, both via Erin Loechner's pinterest, Images 2 &4 via KIM's flickr