Depends on who you've got on your team, but the methods described above are all effective. If you mostly get your points in the paint, pound the ball inside and don't be too slow in scoring the basket. Drive-and-dish and passing out of double teams in the low post are effective ways of picking up assists if you have good outside shooters.
And of course, make good passes and take wise shots. Passes out of bounds and bad shots aren't going to help your playmakers rack up assists.
