Perving, spying on government, maybe even sneaking into business boardrooms to see what's being considered. Lot's of things would be possible. Might even be 'fun' to let the air out of tires of cars that seem to intentionally avoid staying between the lines of their parking spaces.

Hmmmm ... do the clothes we wear become invisible or must we become nude? Might make a difference on what we can do outdoors given the various climates we live in.