USB LED Lights $3.50
With this optional accessory you'll never have to worry about running out of batteries again! These lights have a USB plug instead of a battery compartment, so you can plug it into a USB port to light up your tree house. Build this set of lights into your model instead of the battery powered lights that come with your 3D puzzle kit, and you can enjoy the cosy glow of your creation all night long! Great if you’d like to use your tree house as a night light. Lights: 20 bulbs, warm whiteTotal length: 2.5mIncludes an extended 1.5m power chord section For use with a Tiny Treehouse model (sold separately). It is not possible to swap lights in a model after it has been built. USB power socket not included. Unit does not charge or store power in any way, and must be connected to a power source to function.