It looks so realistic

found on Grateful

Not that I'm condoning killing people (goodness knows there's enough death going on already), but this would be an excellent example of using cover to disguise or otherwise hide your activities.

Who's gonna tell him?

found on Izismile

On the one hand, the bear is very clearly not blending in well enough to hide from a predator. On the other hand, his only predator is man, who would be hunting him with a gun, and while the cat and owl may be concealed, the bear has at least partial cover. 

Camouflage Mailbox Cover

Product Page

I suppose this is one way to avoid bills, however avoiding bills might not be a great idea.

Peephole Privacy

from here and here (image source)

You may not have realized this but people can actually peep IN through your peephole. You may want to invest in some sort of cover for that, and why not a sliding cover like you probably have for your laptop webcam? It doesn't have to look like a barn door.