I found a few websites that I've looked at for ideas and to refresh my memory from my playing days:
Youth Basketball Community | Presented by the NCAA & the NBA | iHoops
Basketball Plays, Basketball Drills
Basketball Coaching Playbook, Coach's Clipboard... Coaching Youth & High School Basketball
Hundreds of FREE Basketball Coaching Drills, Plays, Tips, Offenses, Defenses & Resources
Also, I've had the privilege of talking to one of the fathers' who happens to be a former college coach, so it helps to pick his brain and get drills as well.
And running lines motivates, as well as benching players who aren't performing the way that you need them to, once you get to games.