The completionist in me is distressed I can't get all the eggs without living here and hooking up to an IV, but it helps me overcome that. Other than that, it's ideal! Past event items, when I didn't exist here for them!
I've had them appear within a few posts of each other, and some without any posts at all. I think it happens randomly, or semi randomly, based on page loads. So if you reread a bunch of things, you're more likely to get them.
Gwenoir rolled 5d6 and got a total of 15: 3, 5, 5, 1, 1