My user icon is a print I made where I dipped my hand in the developer and laid it on the print for about 30 seconds. I then developed it as normal. My fingerprints and hand-folds etched into the print. Very cool. I've also used a rag to dab developer on in strange ways.
In other worlds he has
darker days, blacker swells.
Strokes that mix noir revenge
on waves of grey.
I have done hand coloring, using rubber cement to selectively tone parts of the print, and printing negative image by creating an inter-negative. Some of the images are in gallery under my user name. Another one was, print on fiber paper as normal. While still wet, roll it up and wring it. Then pull it open and dry. It becomes a 3 dimensional image.