Just hangin'

Pointing at the other window, Lucy said, "Clothesline hanging there!" And just like that, a clothesline hung from the window in the building across from Lucy where the key was to... a wall that was well out of her reach. Well, that wasn't very helpful... Lucy jumped as she noticed a large shadow over her head, only to breathe a nervous sigh of relief when she saw it was just a note from the Mage, clearly written for a Lucy that was not an inch tall. Lucy crawled out from under the note and pulled its side down so she could climb on top of it and give its words a look. "'A good idea, but when you're small enough to fit in a box, you're well served thinking outside it.' What does he mean by that..."