You could prank her like the movie Juno, like the scene where Juno writes in chalk on the sidewalk to check the mailbox and when Bleek opens it, hundreds of boxes of tic tacs come cascading out… maybe not tic tacs, but something similar. Also I’d do it after you know the mail carrier has been there… would be a shame to waste it. You could get a bunch of little pom-poms from the craft store, or ping-pong balls… the ping-pong balls could be especially fun because theyr’e so bouncy. Also you could write something on each ping-pong ball.. mwahahaha I need to find someone to prank now.