[Mr. Brightside]

“that can generate enough power to charge a cell phone or an iPod ... or *various* types of electrical devices.”

(ahem)

[steve-b]

"that can generate enough power to charge a cell phone or an iPod ... or *various* types of electrical devices."
(ahem)

You mean like one of those neck massagers?

[wildbill]

It struck me that one obvious use would be to recharge the famous Japanese ben wa balls.