Here's mine - half of the coffee table. I just lay a big piece of corrugated cardboard over it and kneel / sit in front of it.
Yours is the best workspace I've seen yet! It proves that you can work wonders with a basic setup. I remember doing much the same at the cottage. Nothing but a ceiling light, a box cutter, sandpaper, and dime store Testor enamels. A great way to spend a rainy day at the lake.
Not to be a killjoy but your setup gives me the impression that you haven't hit that 50yr old mark yet. If my experience is the norm, you'll be stiff as a board after kneeling at that table for an hour!

You'll probably also find that as your eyesight begins to fade with age, a bright light will become a necessity . . . along with a chair.

Geez, this is just getting depressing.

Cheers,
Chris