Hackers Help: Make tertial work lamp into floor lamp?


I have a lot of Tertial work lamps left over from graduate school days that I would like to make into floor lamps. You can buy a base for drafting lamps for about $90, but I am looking for a cheaper option as I would like to make several. Thought about using light stands but not sure how to connect the lamp to the stand. Any help would be greatly appreciated.