My 3DS comes with me to every con I go to. The most recent apps people show along with their Miis tell me I'm not the only one whose 3DS is jailbroken. We love to see it!
pictochat had a cool thing where you could send something and then pull it down into your text box, but it would leave the cursor at the start of the line. You could make some fun little glyphs by layering different characters with that