Invisibility Ho! And How to Escape It

I haven't had much luck believing six impossible things before breakfast. Not even aided by espresso. However, in pursuit of more achievable goals, I've been thinking about the nature of invisibility. Many big accomplishments have been made possible by the i-power. Midnight explorations at Hogwarts. Escapes from nasty relatives. Thievery in goblin tunnels with far-reaching implications for Middle Earth. In certain moments, who hasn't wanted to be totally unseen? But invisibility is a double...