The button quail eggs would be pretty hard to do. Their shells are pretty thin.
Talked to the ladies who had eggs at Ren Fair. They order theirs in from somewhere. The small ones they had at Ren Fair were regular quail eggs, of course. They do parakeet eggs, though, too but didn't have any with them.
The eggs they get aren't blown out, though, at least not the quail and parakeet. They order them in from a supplier somewhere. I got the drift that they get them from a supplier somewhere in Asia, perhaps. The eggs are dried or something, not blown out.