This might be too complicated. But a program that could detect changes in negg price between tokened neggs and untokened taggs and swap between them and sell if there was a profit to be made. i.e. Say TNT does an event that releases xxx negg worth 5 neggery points, price of that drops, and there's a window of time where the price of that negg x 25 is costs than a snegg ~125 neggery points. Then the program will autobuy up those neggs until it reaches an equal price as the snegg. Not sure how profitable this would be.
I think this might be a little too complicated, there are easier ways to make money. It is a good idea since it takes small profit and multiples it. I just dont know how practical it would be with autobuyers and etc