Whenever I see a First Nation's (That's the Canadian politically corect term for Indians) Casino, I have a cynical thought along the lines of "ah, the great Indian tradition of video poker."
So here's a good idea for folks in the gambling machine industry: Track down some traditional native games that can be turned into gambling games on machines. Make machines to play them.
Sure, nobody plays these games any more, not even the Indians. But while everybody understands the financial attraction of the tribes using their special sovereignty to make a bundle with casinos, I suspect many would jump at the chance to offer a game with even limited origins in their own traditions.
At first, gamblers would be confused at new games, but they are remarkably adept at learning, especially with a little marketing. In particular, just provide better odds to introduce the games. Games like "Bowl and Dice" which are random, could easily be converted to slot-machine style games.
Of course this is a heavily regulated industry so a random person can't just enter it on a whim, so I cast this idea out for those already in that business.