Step 1: Find a pen that works.
Step 2: Find a pen that works for longer than a minute.
Step 3: Take the only working pen in the house and start a shopping list. (First item: pens.)
Step 4: Start drawing socks. (Actually, I cheated - I found an image on the internet, reduced the size, and traced it a whole bunch of times. All's fair in sock-knitting.)
Step 5: Start filling in sock outlines with permutations of stripes, zigzags, and checkerboards.
(You'll notice that the 'filling-in' sort of petered out towards the end. Not to mention coloring in checks...)
Though I like some of the short row heel options (top row), I think that'll wait for another design. I'm more intrigued with the flap/gusset heel configuration, though it's going to be harder to wrap my brain around. I think I have it figured out how to do it (it works in my head, anyway), but I'm questioning my ability to write it out in a fashion that a normal person would be able to follow.
At this moment, I'm favoring the one in the bottom row, second from the left. Still have to decide if I want wide or narrow stripes on the sole.
When I get it done, I might be calling for test knitters. You don't necessarily have to be normal to volunteer...