Amazon.com: Smraza 10 Pcs SG90 9G Micro Servo Metal Geared Motor Kit for RC Robot Arm/Hand/Control with Cable, Mini Servos for Arduino Project (10) : Toys & Games
Pololu - FEETECH Standard Servo FS5103B
Best micro servo available!
9g Micro Servo Motor (4.8V) - RobotShop
Amazon.com: 20KG Digital Servo Full Metal Gear High Torque, Aluminium Case Waterproof for Robot DIY (Control Angle 180) : Toys & Games
How to Control Servo Motors with Arduino - Complete Guide