Nifty.
My friend got a set of these, and I can say that they're all worth buying.

Following up with the previous product review, the Bombchu one plays its moving sound, and its explosion a short while after. The Heart Container plays its music when you acquire one from a boss battle or from The Masked Ship.

Simple and awesome
These little things (2" wide x 2.25" high) work exactly as advertised: press the button, hear the sound!

Perfect for putting in a pocket and hitting as you open a door or hear some good news. =)

The pink Rupee drop plays one of two treasure opening/treasure finding themes.

The green Phantom Guardian drop plays one of two sinister enemy themes.

The blue Bow drop plays one of three sounds. Usually, it's the pull-back and release of an arrow, followed on the next button press with the explosion of an enemy. Occasionally, tho', the second press gives the "clink!" of a deflected arrow.

The yellow Link/Puzzle/Ciela drop plays only one sound, the 8-note puzzle-solved melody.

Regrettably, I don't know what the heart or Bombchu drops sound like because, tho' six were ordered, there were two repeats. But, that's the risk of random.