What if you found a ring that can make you invisible like on LOTR (lord of the rings)?
Well... lets just put aside all them weird side effects like wanting to keep it for yourself...... WHO THE FUCK WOULDN'T!!! If you gave it to someone else, you will never be able to find it ever again anyway! CAUSE THEY'RE FUCKIN INVISIBLE!!! So you can't exactly say that's a side effect. And the weird ring you see in the sky when you put it on? CUT! Lets just disenchant that spell! *waves a toothbrush like a wand*
Aside from the sneaking around... I'm pretty sure there is nothing else you can do with a ring that turns you invisible. The whole point to being invisible is..... to sneak around and elude 70% of your senses YOUR EYES! Would suck if you were tying to rob a blind guy though, HE'LL KNOW YOU'RE THERE!!! Since he's like... all wired up without eyes and stuff.
*steals your underwear as you read this - EBAY!!! YES!*