Wash, wax, oil chain, change motor oil (if not fresh), fill up tank, add fuel stabilizer (though not really necessary for under 6 months), and cover with something that "breaths".
Trickle charge every 4-5 weeks, or keep battery hooked up to a tender. Keep tires off of direct concrete.
While I don't do it anymore, those with carbs may want to drain them.
Done. Everything else is just "good feeling" effort IMO.
Just bringing my response "TTT", for those that haven't read page 1, or don't feel the need to read page 1.
Only thing to add, if you're really anal or have super soft compound tires, it doesn't hurt to chalk and rotate your tires every few weeks. I used to do this, but stopped years ago and never had a problem.