When I get into trouble at school I'd like to take an invisibility cloak, drape it over me and sneak out the door. Or I'd like to have a 3 headed-dog because then no one would argue with me.
T-shirts and long pants make me easier to find in a crowd, but also easy to disappear in a crowd because if I am wearing this and suddenly I am not, it's like a Harry Potter invisibility cloak.