Wear your house colors with a little more panache than the usual stripes.
It's okay to be a show off about your Quidditch skills every once in a while.
We all know that Harry's Firebolt broom is top notch, maybe it can also make you a better writer. Heck, this is such a good looking replica I might just keep it in the case and not even write with it!
Potions class would be so much more interesting if the cauldrons were edible.
Real books cause papercuts and have too many words. Start off a little easier.
As sad as Hufflepuff is as a house, they do have nice colors.
You may be up to no good alright, but sadly this map still won't tell you where Snape is off to.