Using agility hurdles is a great way to improve your ball handling. A crossover dribble is great for creating space for your jump shot. Dribbling under an agility hurdle allows the shooter to get lower, quicker and become a better ball handler.
Every coach that I know wants his offense to be run in transition. Running 2-on-1, 3-on-2, 3-on-2/2-on-1, 3-on-2-continuous drills are common place. I ran them as well. However, they never served the function that I wanted them to. 3-on-3-on-3, along with its progressions, is a great tool for sharpening your transition game, half court offense and even your defense.
Often times, when recieving the ball, especially on the run, the game demands quick and positive action. Quick Dribble Change is a drill that works shooting, ball handling, conditioning and is directly relatable to game situations.
Down screens are an especially dangerous action for any offense. Properly timed and spaced, they create real problems for any defense.
It is important to create a philosophy and practice actions necessary to defend the down screen that fits with your overall defensive philosophy.
"Post Feed/Spot Up/Seal" is a great multi-purpose drill for multiple players. It includes multiple skills and situations which allows it to be very efficient work. Ball handling, passing, shooting and post play are all aspects of the drill.