Duane - great news.... We have 3 Dashes that we will subscribe to once you get things ready! The work you did to revive the Chumby was awesome and have been a monthly subscriber of yours for a couple years now! Thank you!
Since you are already a subscriber, if you add the dashes to the same account, you will not need to get another subscription.
Subscriptions are per-user, not per-device, and dashes will be treated like every other device.
If you feel that you want to contribute more anyway, then you could create another account, or buy charms or something from thechumbystore.com.