How about a deck of cards for long-term, non-battery entertainment? Perhaps even a few games of poker with NPCs while gambling up your excess cash cards and lighters.
Even better, a few board games! Trade wood for sheep, trade Park Place for a railroad, roll 4d6 to attack that orc… you name it!
I don’t know how to add graphics to the game, but this would be FANTASTIC to see! I’d definitely try to collect all of Cataclysm’s board games… especially every Dominions and Catan expansion. And actually keep my NPC companions alive and healthy, if only so my character could beat them at Twilight Struggle.