👉 The cheapest project you can undertake is often a basic LED flashlight powered by a coin cell battery and a small resistor. This setup requires minimal components: a 9V coin cell battery, a 220-ohm resistor, an LED, and a switch. By connecting the resistor in series with the LED, you can ensure the LED lights up safely without overheating. This project is simple, requires only a few parts, and costs around $1 to $2, making it the most economical starting point for electronics enthusiasts.
