Note: You will need to Hatch your Wish Dragon to get your token.
So, to get one wish token we have to craft a wishing well and get the Wish Dragon. The well is easily crafted (get the Seeker dragon, send on quests to get one of each balloon color, then craft). The Wish Dragon is the grand prize in the current tales.
We can use the wish coin just once to get ONE of the following:
3 Farm boosts (which must be a 10X since that's the only one I'm currently maxed out on and it won't let me craft it even if I had the token)
15 adventure tickets (gold tickets)
Supreme Dragon
Pretty nice options!