• The Tiny Titan: Suggests small stature but immense power.
• The Pocket Rocket: Implies quickness and surprising strength.
• Mini-MVP: A playful take on the Most Valuable Player award.
• The Quickdraw: Highlights speed and agility.
• The Hustle King/Queen: Emphasizes hard work and determination.
• Air Apparent: A cute way to suggest impressive jumping ability.
• The Floor General: For a player who controls the game.
• The Ball Hawk: For a player who excels at stealing the ball.
• The Swish Master: For a player with a great shooting touch.
• The Spin Doctor: For a player with excellent ball-handling skills.
• The Energizer Bunny: For a player with boundless energy.
• The Clutch Kid: For a player who performs well under pressure.
• The Silent Assassin: For a player who is unexpectedly effective.
• The Professor: For a player with high basketball IQ.
• The Maestro: For a player who orchestrates the offense.
• The Flash: For an exceptionally fast player.
• The Jitterbug: For a player with shifty moves.
• The Sniper: For a player with accurate long-range shots.
• The Cyborg: For a player with seemingly superhuman abilities.
• The Underdog: For a player who consistently exceeds expectations.

These nicknames aim for a balance of cuteness and basketball-related attributes, suitable for 7th graders. Remember to choose a nickname that the player themselves likes and feels comfortable with.