Stick UM!s and Hook UM!s Use Stick UM!s to hang posters and pictures of your friends, and change them throughout the year. They don’t get less sticky, no matter how many times you move them. Put one by the door and stick your phone there so you always know where it is. Or use it to have a place for leaving a note. let each roommate have one color and leave handouts, notes, makeup they need to try, etc. on their Stick UM! There are a zillion uses for this colorful, sticky rectangle! $6.99