However, I still wanted to be able to play it on the TV. So my solution was to instead of making a fully portable nes, I simply fit it into a case slightly smaller than the original. However, the case now also holds 1 controller, the A/V cables, a game, and the power supply when closed. Making it much easier to carry around.
Kudos to 1-up for the idea, and the great instructions on how to dismantle the NES.