Videographer and Tinkerrer Pedro Callisaya just created what’s probably the cheapest four-axis motion controller (and even the basic ones don’t run cheap). He did this using a scraped 3D printer, which, to be honest, I am surprised never happened before in the modders community. (if the name sounds familiar, it’s because this is a second iteration of an ongoing project)
While the build is relatively easy for what you get, it is not the first project I would go for if I were just starting with electronics. That said, if you played with electronics a bit, this would be a fantastic weekend project to try out. You can download the project files here on a pay-what-you-think-is-fair basis.