One of the things I like about watching the framers work is their near-instant creation of “furniture” they need to do the job. On our site, this includes a sawhorse and some scaffolding.
The sawhorse is created in the time it takes for me to walk to my shop, move something out of the way, pull out my two plastic ones and walk them back over to where they’re needed. Since I’m on my little errand, I don’t get to see the cutting part, but I suspect that there’s a standard way to cut the 2x4s to make it. Here’s the result:
You can click on the image to enlarge it to see how the parts fit together. I suspect this thing would be a pain to make with a hammer, but with a nailgun it’s very fast.
The scaffolding they make is rock-solid too. I’ve seen other sites where they use diagonal braces to hold it up from the side of a building several stories up (without the posts going to the ground.)
Again, this is good design. It’s built quickly with what’s available on-hand, does the job required, is adaptable as the job needs change, and in our case at least, gets recycled into being part of the building once we don’t need it anymore.