There follows a list of all current NBA contracts that feature trade kickers, in contracts valid as of the time of writing, along with the value of them. Note that trade kickers have no expiry date other than the expiration of the contract itself, and that having a percentage listed means that's the percentage of their remaining salary that they will additionally get with the bonus.
New York and New Jersey made the two biggest moves by acquiring the two All-Stars, Williams and Anthony. The Knicks finally closed the deal on the Anthony saga, their additional acquisition of Chauncey Billups and their retention of Landry Fields keeping the price tag just about on the right of 'acceptable.' Meanwhile, the Nets's genuinely staggering trade for Williams, whilst ultimately a backup plan, turned out to be better then their original plan. If their intention was to chase Melo for half a year, then give up and trade less in a deal for a better, cheaper player with less mileage on the clock, then they pulled it off beautifully.
Carmelo Anthony's trade kicker, equal to the lesser of 5% of his remaining salary or $1 million, was not activated upon his trade to the Knicks. He was already earning the maximum salary, and putting a trade kicker amount on top of that would have pushed his salary above the maximum, which is not legal. Therefore, his trade kicker was not invoked, and his salary remained unchanged. (It could therefore be argued that this trade kicker was redundant from the start, and needn't have been included at all. Probably true. But it was put in anyway, just in case the cap had grown beyond all reprehension since the date he signed the deal. As it turns out, the global economy went the other way, we had a recession, and I lost my job. Swings and roundabouts.)
Note: Non-US teams that the player
has played for are, unless stated otherwise, from the top division in
that nation. If a league or division name is expressly stated, it's not
the top division. The only exceptions to this are the rare occasions where
no one league is said to be above the other, such as with the JBL/BJ League
split in Japan.