I made this a while ago.

It’s 8 LEDs and a pot, with the position of the pot controlling how many of the LEDs are lit. This is not a complex project, but I like it very much because it’s the first thing I put together that was not just copied from a tutorial. The shift register/8 LEDs was from one project, but I figured out how to add a pot to the circuit, read the pot position off of an analog pin, and set the LEDs accordingly. I am very proud of my silly little circuit.