Like a wonder trade for eggs? Eggs obtained not counting towards
shiny chain or maybe being a once a week thing so people doing long
hunts can hatch some random pokemon every now and then without
breaking chain?
Thats why I included the once a week part, maybe 1 or 2 eggs max so
you can get a little spice to your batch of eggs? (I suppose that
could be a sort of pun aswell xD) But back in emerald i think it
was i saw something about you and your friends could each put in an
egg and it would randomly give each participant one of the eggs and
no one knew what they got till it hatched. Think of it like the lab
but with other breeders eggs?