I don't think he can do anything can he? Its against the collective bargaining agreement to provide gifts like that if you're not under the cap. Unless it changed last year
I don't think it has anything to do with being under the cap, but you're right - the CBA prohibits him from buying them gifts.
The PS2's in the locker room don't belong to the players, so that's not a gift. Of course he could upgrade some toys in the locker room or something like that, but I hardly think that it would motivate the players.
Dirk... we gotta win this one... Cube's gonna get us xbox 360!
He offers three free lessons of "How to Become a Billionaire from the Internet" seminar.
But seriously, I don't think he's allowed to offer any type of bonus, money, or additional perk incentive. That would go against salary cap rules. (I would think, unless there is an exception for winning a title). Otherwise, they get extra money from the league for winning, but that's about it.
Of course, side benefits from winning a title include: better endorsement deals, better contract negotiation leverage, better post NBA career options....and better babes.