What if you could change the size of the speaker your music plays out of? As often as you like? Without the need for any tools or technical know-how?
Speakers come in all shapes and sizes but the Mighty BoomBall Speaker might be the first one that lets you easily change that shape and size. Basically, a speaker is nothing but a container that amplifies sound, resulting in louder music. Boomball lets you transform any container into a speaker? Want to hear your music through a soda can? A Starbucks cup? How about an empty box? Just place the brightly-colored ball on the object you chose, and enjoy the cranked-up tunes.
The little speaker, which measures approximately 3.5cm(D) x 37mm(H), is available in either red, green, blue, or black for $27.69. Pink is usually one of the available colors  but it seems to be sold out at this time.
“Basically, a speaker is nothing but a container that amplifies sound.”
Speakers do not amplify sound. And they are lot more than “containers.”
An airplane is nothing but a container that flies. A box is nothing but a container. A container is nothing but a box that contains things.
I think I am getting the hang of it.