I needed a legit workbench and I had a bunch of wood to use up. I got a bunch of 1x8x6s from my local hardware store's scrap pile. There's a reason they were free... But I couldn't just toss them. I used all scrap, from the hardware store, my garage, and my brother-in-law's farm, except 3 2x4s that I bought new.
For this workbench, I used slats on the top and the bottom shelf. The frame is 2x4s. I had some idea I could use the space in between the slats to cut wood, but after adding 2in casters, it appears it might be a bit too tall. Even still, the spaces in between the slats make for excellent clamp storage.
And now I finally have a legit, mobile workbench to keep all my chaos somewhat contained.