Help needed

Tiffany at work has done something that makes her the target of any prank I can come up with/ get away with. I have a few in mind, but would appreciate your imput as well. 

Keep in mind, I work in an office, and these need to be things that can be done quickly, fairly easily, not too disruptive to others and nothing that is going to get me immediately hauled down to HR.

Prank one done

Before I left work tonight, I took several things Tiffany (see this post) needs to do her job and then I left a post it on her desk telling her to go to a certain empty cubicle. There, I left her a post it telling her to try another desk. On that desk, I left her a note to try another one. On that desk I told her to check the freezer. In the freezer is the post it telling her what cabinet in the kitchen she can find her belongings in. 

She apologized for her transgressions and I told her, "Too late. I am already in the pranking mood"  She said, "Lets work together and prank other people" 

Heh. Nice try. I said, "No. Just you"

Oh.. and before she left, I left via the stairswell, but snuck back in and creeped up to her desk and scared the hell out of her. 

good times ... good times...