Folks, if you've recently upgraded or renewed your annual club membership but it's still not active, please reach out to the BOD or a moderator. The PayPal system has a slight bug which it doesn't allow it to activate the account on it's own.
While you could use most anything of course, I used on of these for a while - GAMMA2 Vittles Vault Stackable Pet Food Storage, 40-lb - Chewy.com . I did not use that specific model, I just wanted to link you the brand, they have lots of shapes and sizes. I simply drilled a hole for the water line and power cord.