I have always been partial to using natural light but I’m writing an article on using natural light vs. using a light box (will link to article when it’s posted) and I needed to get some firsthand experience. I found this post on making a light box for $10. But it cost me nothing! All you need is a box, tracing paper, tape, a box cutter, and a piece of poster board (or something similar, I used the back of a poster) Here is my process, all the instructions are in the link!
All in all, building and using the light box was a lot simpler than I thought it would be. It always seemed more technical I guess (I don’t really know why!) You should try building yourself one, it is super easy and I do like the result!