In the past few years, we have covered plenty of programmable robots for kids and adults. The LittleArm Big is a 3D printed Arduino robot arm you can train with its simple graphical interface. You can control the robot arm from your Android phone via Bluetooth.
The LittleArm Big has 5 DOF, reach of 11.5 inches, and a fully 3D printed body. It comes with metal gear servos. According to the makers, you can assemble this robot arm in about 2 hours. The LittleArm Big is controlled by an Arduino Nano.