May seem a bit of a silly question. But what is the Red Special Coin item for?

You can dump your special coins in the coin machine to try your luck! You can win sP, a restockable item, one of the items only available from the coin machine or even a stat for your pet. c:

Ooh thanks for answering :) Ooh that's fun, I like the chance games. You receive a(n) Purrglar!