Wash it. Put on center stand. Plug into tender. Make sure tank is atleast half full.
That's it, it's always ready to ride.
I'm not changing oil unless it's due. I'm not flushing fluids unless its due. I'm not removing the battery, that's what the tender is for. I'm not putting tires on wood blocks, that's silly. I'm not covering it up because that just invites critters to call it a home. We are parking them for maybe 4 months. Not like its a very long period of time. People way over think this.
Only other thing ill do is put some fresh decon out in the garage.