With enough iPod docks out there, if stacked together we could imagine it toppling over the Leaning Tower of Pisa. So why not create a sound dock that's not only portable, but make it small enough and compact enough to fit into a backpack compartment? The einö Portable Speaker System becomes a wonderful solution for those continuously on the go and need speaker-driven music to keep them company.

Dimensions are 7.7″ (w) x 4.2″ (h) x 1.3″ (d). Available in red, blue, white and black for $56. You're going to need to know how to read Japanese and some yen laying around for this particular purchase.

[via Technabob]