(1) Look on Craigslist for an air conditioner he could take to work — thoughtful in terms of his sensitivity to temperature and cash flow.
(2) Get him something fun for his new workspace. A calendar, a new tool, a CD player, a Zen garden, a sexy pic of you, whatever. Actually, you could take a sexy pic of you and get it made into a wall calendar and/or mug at cafepress...
(3) Ask him if you can help him clean it up and arrange his new workspace before he starts.
(4) How do you feel that he is in demand and changing to this new/better job? Does his competence excite you? Are you proud? Praise him, authentically.
(5) Tell him a fantasy that involves his new work space and ask him how soon he might be able to "work late."
(6) Buy him a lunch box with a set of menus that he can choose. Make him lunch when he starts. Put dirty notes in his lunchbox once in awhile.
