My brew kettle doesn't fit in my compact fermenting fridge, but once the temperature is right so that I can ferment at ambient temperatures, I plan to pitch yeast straight into the brew kettle once the wort has cooled. I'll put the pot lid on and let it sit until it's done fermenting. I don't know why I've never done it that way before. I guess I just learned to brew one way and have stuck to that. I have left the lid resting on my bucket without snapping it on. All I do is plug up the the airlock hole. I've never been overly concerned about contamination. My 3 year old brewing buddy is very curious, so the hardest part is keeping his grimy hands out of the bucket. He may confuse krausen for bath time bubbles, so who's to know what he would do in there.