I've recently bought two littleBits modules. The battery connection (blue), and the bright light module (green).
I was staring at them until I came up with this contraption. So, if you`re short on bits then this the "able" for you.
Step 1: Materials
•littleBits (power module)
•littleBits (bright light module)
•assorted rubber bands
•battery pack (5v.)
Step 2: The Body
Take your cardboard tube and cut out a rectangle to fit your littleBits inside.
Step 3: Use Your Bits
Connect the littleBits and slide them into the space you cut out of the cardboard tube.
Step 4: Saran Wrap
Place your Saran wrap over your bright light module and rubberband it around the tube.
Step 5: Battery Pack
Place the battery pack on the cardboard tube and then rubberband them together.
Step 6: Finished!
Flip the switch on the battery pack and the power module and you're ready to go!