A Give-A-Damn box
I want to make a give-a-damn box. A small box with a 3 way switch that accomplishes absolutely nothing... the switch will simply display a green LED in one direction, red LED if flipped in the other direction, and breaks the circuit entirely if the switch is in the middle. The downside is I know virtually nothing about which resistors I need for which LEDs for which batteries I use. I'd like a single AA or AAA. I know overkill for powering a single LED, but I'm ok with that.
The premise behind it is there is an inside joke that a handful of us at work have. Our give-a-damn is broken. So if they see this with the red LED, they know at that moment, I don't really give-a-damn.