What a brilliant plan! My daughter loves egg salad sandwiches so I tried it out last night. I cut a few corners - put the eggs in a small baking dish (I try not to use aluminium foil) and it worked great. I even included a cracked egg, with some trepidation. It didn't look too good on the outside, but it was usable. Such a simple idea - now why didn't I think of this before?