Two Unusual Jigsaws

Here is a very unusual jigsaw, which fits together to make a highly decorative vase. When you look inside, you can see that each piece is numbered, so if you use the special key that comes with the jigsaw, you can make your life easier! In addition, although you would not expect the jigsaw vase to hold water, it has a little plastic tube that fits in underneath, which allows you to use it as a real vase!

Secondly, a jigsaw where the plastic pieces fit tightly together, and you push one piece into the puzzle, thus displacing the piece that was there before, which you can then use to displace another piece. An unusual take on the traditional jigsaw.