Here’s a really interesting engagement ring that projects miniture slides onto the wall when lit with a light source. Perhaps the best engagement ring ever?
Also while at it, check out Talking Ring by the same author.
In a darkened room, light from a candle or LED passes through the ring to project a series of portraits. A selection of miniature slides were made of different family portraits and inserted into the edge of the ring for projection. As Jerram’s family grows, photos of his children can be added to the ring. The ring was inspired by 19th Century Standhopes.