I just completed this little beaut' for one of my husband's coworkers, and this is my husband jokingly modeling for me.
The symbols are from two popular, and very pervasive in the 'geek' community, games called Portal and Half Life. I'm more of a Portal girl myself, but I've spent many an hour battling my way through Half Life with no remorse. My husband actually came home with this request, and I was pretty giddy to try it out.
I find that using intarsia or fair isle when knitting hats that it takes a lot away from the structure of the hat, so I just did duplicate stitch over the finished hat to prevent from any gaps in the work, and just an overall 'weird' effect when it's actually worn. I'll be doing a tutorial on duplicate stitch soon, because I'm currently planning a line of... dun, dun, dun, SKYRIM hats.
So far these are the symbols I plan on charting up:
The first symbol is the Thieves Guild symbol for "fence," a person you sell your ill begotten goods to. The next the symbol for "protected," and the last is just the symbol simply for "Guild.
I would also like to make a Nightingale hat. This one will be for my husband, because he's pretty proud of his Nightingale status.
I obviously have a sliiight obsession with the Thieves Guild right now.