Made my own scaffolding out of lumber and steel pipe. Parts are standardized to be interchangeable. I have had it up to three levels high I built it myself instead of buying prefab because it is cheaper, provides a wider and deeper work surface and the levels are taller than regular scaffolding so no crouching is needed while working on lower levels. It can also interlock lengthwise for long runs and the feet can be adjusted 2'6" for steep slopes.
Unfortunately I took it down this weekend after painting a section of my house so I won't be able to get pictures until I set it up again for the next section.