Here is a helping hand jig that is useful for soldering, gluing, painting and macro photography. It is highly configurable to hold various small objects in many positions.
While this version is 3d printed, it could also be made using traditional hand methods.
Step 1: How It Works
While this may not be the ultimate jig for everyone, I have found it very useful for soldering and gluing small projects. It can be adapted with different grippers for different kinds of projects.
I was experimenting with various ways of 3d printing self-assembling hinges for future use in robot arms and legs. Making some hinges that can lock in place seemed like a good way to test the strength of the structures.
The helping hand has six configurable, lock in place, arms with interchangeable grippers. While this version was 3d printed, a similar jig could be made using acrylic or other plastic sheet material. It could even be made out of thin plywood. Three layers could be laminated together to make the arms.
Step 1 pic shows it set up for soldering with flashlight and magnifier. Pic 2 shows it folded up.