If constant practice and sheer dedication aren't enough to improve your game, then you might as well consider acquiring some effective basketball training aids.
Oversized basketball - is usually 3 inches larger in diameter than your regular basketball. This is designed to improve your accuracy in shooting.
Board-less hoop - is designed to improve your shooting accuracy by making shoots without depending on the board.
Rebounding device - helps you to practice your shooting without rebounding the ball after every shot.
Shooting straps - is attached to your shooting hand to assist you in maintaining the right form while taking a shot, make the right follow through, and improve your one-handed release.
Agility ladders - helps you develop eye-foot coordination, foot quickness, and versatility. You can use your regular ladder to achieve the same result.
Weight belt - increases your strength, at the same time, improves your vertical jump - helpful during rebounding and taking perimeter shots. Also available are weights worn on the ankles.
Jump soles - are training aids that are attached to your own shoes during practice and training which helps you improve your leg strength and jumping ability.
Jump ropes - are the most basic and probably the cheapest basketball training aids you can have. And they are effective too. Jump ropes improve your heart. Jump ropes also improve your calf and leg muscles. For better workout results, try weighted jump ropes.
Take note that these are only aids to improve your game. They aren't designed to automatically make you a better player. Use them correctly combined with your dedication, hard work, and love for the game to get the best results.