A storage container includes an attachment device for detachably mounting the storage container to a utility vehicle. The composite material contains an insulating media combined with a foam. The embodiment further includes an active desktop to host an active application and present the active application on the display subsystem, the active application having active focus. A diffraction grating of the photodiode module may be positioned and configured to selectively couple light incident on the diffraction grating to a dielectric-surface mode associated with the surface of the photonic crystal.