If you don't feel like sticking around to wait, a buzzer will notify you when your eggs are ready, and there's an auto-shut off function that prevents overcooking.
"When I tell you that I think this is one of my all-time favorite purchases ever, I'm not EGGagerating.... but really, I'm not. I pretty much use this every single day. Let me start by saying that the pieces themselves were self-explanatory. I opened this when I was VERY hungry and therefore had no patience to read an instruction manual, and found it super quick to figure out what to do.
It can boil up to six eggs at a time. It comes with a little measuring cup with a needle at one end that you simply pierce the larger top of the egg with, place the egg on one of the six slots of the tray with the pierced side facing up, fill the measuring cup to the soft, medium, or hard line depending on your preference, pour the water through center hole, cover the cooker, plug it in, and press the button. It makes a sound in the form of a pretty cute (and TBH, kinda catchy) song when it's ready, so you don't have to sit and wait around. This also comes with a poacher tray and an omelet tray that are just as easy to use! I've been on a kick with the omelet tray lately, because it's just a million times better than having to stand over the stove." —Sam Wieder
Get it from Amazon for $18.11+ (available in five colors).