The Invisibility Challenge

I'm working on a blog post about invisibility powers, and what it might be like to maneuver  when the world can't see you. This is going to be the first of my "Power Plays" series, that's meant to be the definitive writer's and reader's guide to how abilities like this might work.

And as part of that, I'm looking for input on one thing: invisibility has a bad reputation, with everything from Plato's Ring of Gyges to locker-room jokes... or at best it appeals to tricksters and outsiders. But until December 15th I'm offering a $10 Kindle gift certificate to the first person to suggest a use for invisibility that isn't a form of outwitting people (or animals or the like, sorry).

Post your answers on www.kenhughesauthor.com. I'll include the answers I get in the blog, and if nobody's able to send a really good suggestion (it's harder than it looks) I'll choose the least silly answer.

But I do know one different use myself. So, who else who can see things like this?