Tried to make a Pina colada mead following city steading brewing's recipe, accidentally bought coconut milk instead of coconut water and found out only when everything was sanitized and pineapple juice already in the fermenter, and thought "what the hell, what the worst that could happen? If it goes rancid I'll just dump it out", we'll, I woke up to a lovely Pina colada smell and my kitchen absolutely covered with goop and air lock in the other side of the kitchen. Learn from my dumbassery.
I remember having to haul everything out of the pantry and scrub the walls after a 2L plastic wine fermenting bottle exploded. Our version of an airlock was just gravity and a loose cap... which someone tightened.