I don't have exact numbers in mind, but something along the lines of you can spend like 5000 tokens on a $30 steam purchase or something.
Kinda like a giveaway, except instead of Cohh giving one thing away to one viewer for being apart of the channel during a sub-train, this would be a reward for long time viewers who have been with the channel for a while.
Instead of a random chance for any viewer to be rewarded, this would be a guaranteed chance for long time viewers to be rewarded.
I don't know, he may find this to be in bad taste, but I thought it was an interesting idea.
(Just a quick FYI, I only have about 175 tokens, so this isn't even remotely applicable to me)