Do you remember the old trick where two glasses are placed with the openings down onto a transparent glass plate (or a book), which is then turned over with the glasses being suspended in mid-air? This old trick, which was done with a glass plate, a book, and with and without a napkin underneath the glasses, is seldom seem these days. Look up Lewis Ganson’s books for a detailed description of the gimmick, if you don’t know the trick. It’s a good one.
I always liked the trick because of its simplicity and the clean look of the articles used. Here is a little suggestion to make the whole thing even more spectacular and logical.
Instead of the glass plate or the book, use a clear bottle. The image shows how impressive this setup looks. The method and the gimmick are precisely the same. The whole thing begins as a juggling stunt, which then transforms into a magical effect when you turn the bottle.
I would suggest using the modern polycarbonate glasses for this stunt and the gimmick made of the two little glass pearls and nylon string to render them invisible. Sometimes, changing a detail makes the whole difference.