So I told her about this cool project, described what a 35mm slide was, said how old they were, etc., and she looked at me impassively for a couple of beats and said, "Can we watch E.T.??" So we did. It was a spaghetti and movies and baking cookies evening.
I haven't given up on the idea, but she'll have to be in the mood to do it. Considering that I haven't been in the mood for a year and a half, I can't expect more from her!! We'll try again another time. Meanwhile, I will do a tray or two now and then. The small stack of trays in the corner of the dining room will not go back to oblivion on the bottom shelf.