Awaglass by Norihiko Terayama

As with a regular hourglass, the glass is hand-blown by skilled craftsmen, but here the sand is replaced by bubbles formed by specially formulated soap-water passing through the constriction in the middle.

This “bubble watch” may be much less accurate than a regular hour glass, but it’s way more fun to watch.

Ships in a gift box.

If you are a fan of unusual time pieces, the Can You Imagine Melting Clock is a must have.