I remember when I bought my first soldering iron [I was 10 years old :)]. At first it was okay, soldering simple joints was child's play. But as my designs became more complicated, I needed to work around my project while soldering. With solder lead in my left hand and the soldering iron in my right hand, at times I would use my legs to hold the project. I burned my legs. When my legs were unavailable, I would use my mouth to hold the device. It didn't turn out nice either. Once in a while, I made my younger brother hold it for me while I solder. Yeah, I burned us both.
But then I saw instructables about third-arms and I wanted to build myself one. However, the authors use materials which I do not have, so I decided to improvise and make my own instructable :D
Step 1: Gathering tools and materials. [gather, not buy]
1) 4 alligator clips
2) 1 earphones socket
3) 1 CPU fan
4) 2 feet of hard wire
5) 1 power supply with earphones jack
Take note, only the hard wire and alligator clips are required for the third-arm. However, if you would like a convenient fan for blowing away those harmful solder fumes [I personally think that solder fumes make soldering look cooler]. If ever you decide to use a fan, you may also ignore the earphones socket and connect it directly to the power supply [I use only one power supply with the earphones jack as its plug because it is convenient].
1) Glue gun + Glue thingy
2) Soldering iron + solder lead + soldering stand
3) Wire cutter