That's really strange. Even if there's another player character the town resets all the eggs..
I have a lot of flowers so thankfully the earth/rock eggs were confined to a few spaces.
You can fish out and shoot down eggs to get the furniture, but that's if you want to go back to yesterday by TT
I had a lot of trouble getting the egg furniture simply because there wasn't enough eggs. I was running around diving and fishing for them for hours and all I got was candy. I wanted the egg lamp from the event and just gave up in the end from frustration.
I think I got all of your eggs in my towns... seriously, I developed a twitch there were so many balloons flying overhead and there were at least a dozen in the trees per town and the rocks were absolutely everywhere and the ground was covered in the buried ones... I'll let you have all of mine next year!!!
Update: I TT to day before bunny day last night, made a brand new character, and when I started with said character this morning I was able to get everything, including the basket of all six types.
I still have no idea what happened with my mayor character, but at least I got them all this time.
Now excuse me while I go rabbit hunting. )))