  We demonstrate three simple cloaking devices that can hide very large spatial
objects over the entire visible spectrum using only passive, off-the-shelf
optics. The cloaked region for all of the devices exceeds 10^6 mm3 with the
largest exceeding 10^8 mm3. Although uni-directional, these cloaks can hide the
cloaked object, even if the object is transversely or self-illuminated. Owing
to the small usable solid angle, but simple scaling, these cloaks may be of
value in hiding small field-of-view objects such as mid- to high-earth orbit
satellites.
