Do you remember the old trick, where two glasses are placed with the openings down onto a clear glass plate (or a book), which is then turned over with the glasses being apparently suspended in mid air?
I always liked the trick, because of its simplicity and the fair look of the used articles. 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 actually are exactly 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 two small transparent pearls and nylon string to render them invisible.