1. Electromagnetic Crane to Remove Metal Blocks - With this toy, kids can learn about the principles of electromagnetism. When playing with the toy, kids will first have the metal blocks with the colored sides facing up. The goal is to remove shaded blocks by using the rotating lever to operate the crane and pressing the electromagnet activation button to pass a small current through the electromagnet. As and when the user removes the shaded blocks from the board, they would read the printed name of the metal (on the bottom side of the block). After practicing for a few rounds, the game is played by having the bottom side of the blocks facing up (with no color coding) so that the only distinction between the blocks would be names of the metal. The objective is to accurately try to target only the metals that are attracted to the magnet. The construction cost is estimated to be about $6-7, with the majority of costs coming from the circuit, electromagnet, and battery cell. The toy is also very durable, with the most sensitive part being the string connecting the crane to the electromagnet. This would be made of synthetic fibers to prevent breaking. By conceiving the idea for this toy, I thought about how kids always want to be challenged to "win" by getting their hands dirty -- learning about electromagnets and metals susceptible to magnetism should be part of a broader activity.