How about a space invaders coin bank? It’s quite a cool idea, but it gets better when you know that it’s an actual working machine with which you can enjoy the Space Invaders game. It’s in fact a 1/6 replica of the classic Space Invaders that lets you insert a 100yen coin in a slot and press the ‘Hit’ button to start off with your game. Don’t worry about the 100yen as you can retrieve it from the machine and use it over and over again to enjoy this fantastic vintage game.
FYI the 100yen coin is included with the product. The Space Invaders Replica Coin Bank can hold 80 coins and is priced at about $59.70. If interested you can check it out here.