The 3-in-1 All Terrain Robot is a tracked robotic kit that you put together yourself. It has 120 pieces that can be put together, as the name suggests, in three different ways: as a forklift, a rover, or a gripper. All you need is 4 AA batteries, a screwdriver and a diagnonal cutter to build the kit.
In the forklift mode, the robot is able to lift up to 100 grams. When the All Terrain Robot is in the rover mode, it is able to go over any surface with its tank-like treads. In the gripper mode, the strong arms grab and pick up an object (up to 100 g) and move it to your desired location. With the wired controller, it can move forward, backward, turn, grip and lift.
Best of all, this bot costs just $45.95.