Like I said in my e-mail, I'd suggest doing image searches of medical knives and instruments of the 60s or modern era (similar to those seen in Space Seed) and pick ones that fit those vague shapes! It's what I did back in 2013 with Unreal Engine 3 to good effect. Here was my process. First, I gathered the best images of the boards and cropped and up-rezzed them Then, I copied the Space Seed instruments and tried to see if any of them fit the shapes. Some did, others didn't. I ended up omitting some of these. Which is when I took to Google to find images of similar instruments, and then modeled which ones I thought fit the best: You could do something similar! I'm going to suggest you do your own interpretation, as always!