A Wiggle-Gram is an animated gif of two alternating stereo images. The result enhances depth.
Here's some I made from old images I found on the web:
The first two are from autochromes (very early color pics) I found here:
Here's another autochrome from 1915
I like the last one the best. Part of my mind classifies 1915 as black and white fossilized age, of sorts, very different from the "real" world I live in. But Miss Autochrome in the chair looks as real as any of my neighbors and could have been photographed yesterday.
Like wigglegrams? Check out these ones someone put together from old stereo photos from Japan.