Remember MakerArm? It is a robotic arm with interchangeable heads that can take on 3D printing, plotting, milling, laser engraving, and everything in between. It has a modular design and lets you add custom heads. As this video shows, you can use this robot to decorate your cakes.
You can connect to the robot over WiFi to control it from anywhere. The arm has a 30″ reach. Like what you see? You can pre-order yours here.