Oh boy. A couple of those I had an idea but didn't search far enough. 11 is the evilest thing I've ever encountered and makes me wanna cry. Oh well, thanks for the event staff!
A lot of these eggs were stupid. I'm not even bothered by the Moana one, but how was I supposed to know the code was 802? I don't play Pocket Camp in order to not support Nintendo's greedy business practices, I'm lucky enough I found egg #1. The best code I could come up with was "LEAFTICKETS".
#5 bothers me the most. I was thinking about Luigi, Marie, even the TBT sages, which I swore could've been it. Proves how stupid I am. I hate riddles.