I like my 3rd hand with a magnifying glass, but sometimes it just falls over as it isn't very well balanced. Also sometimes the alligator clips bite into my PCBs and tear them up.
Step 1: Gather Supplies
Gather needed supplies: 3rd hand, chunk of something for base, small rod such as drill bit or screwdriver, 1 pack of Sugru.
Step 2: Sugru the Alligator Clips
Pull off a small piece of sugru and roll it into a snake about an 1/8" thick and cut into 4 pieces about 3/8" long. Open the alligator clips and insert the rod to hold them open. Insert a piece of Sugru in the top and bottom jaw of both clips. Put to the side to dry.
Step 3: Sugru the Base
Prepare the base. Mine came with some felt, so I peeled it off. Take the remaining Sugru and roll into a snake about 1/4" and then press it to the bottom of the base, then press firmly onto your base. In my case I used a convenient chunk of lead.
Step 4: Put It Back Together
Let everything dry 24 hours and reassemble. Then you are done!