This rather silly invention out of Japan lets you count individual one Yen coins so you can save them up.
The TakaraTomy Life Bank One Yen Counter screws on the top of any bottle, and lets you count up your change.
Now keep in mind that a single Japanese Yen coin is worth just a bit less than a penny, so you might not even be able to find a bottle big enough to save up the ¥999 (appx. $8 USD) to pay for the device.
[via plasticbamboo]