Here's some I've done - 

Dolls -

(below) I put some spooky images up on the tv screen and shot the photos through a mason jar - 

(below) tin foil over my face and a hooded cape. 

(below) a mask on your face, reflected in a window or water. Consider doing black and white conversions for a real retro vibe.

(below) A carved dried apple head.

Other ideas - abandoned buildings, cemeteries at sunset, shadows, creepy dolls, burlap bag masks, farm implements, barns.... 

Nothing says creepy like an old ornate frame to draw the eye to the vintage pic -