Your final exam can actually be an amusing experience, depending on what you make of it. Here are some suggestions...
Bring a pillow. Fall asleep (or pretend to) until the last 15 minutes. Wake up, say "oh geez, better get cracking" and do some gibberish work. Turn it in a few minutes early.
Get a copy of the exam, run out screaming "Andre, Andre, I`ve got the secret documents!!"
If it is a math/science exam, answer in essay form. If it is long answer/essay form, answer with numbers and symbols. Be creative. Use the integral symbol.
Make paper airplanes out of the exam. Aim them at the instructor`s left nostril.
Talk the entire way through the exam. Read questions aloud, debate your answers with yourself out loud. If asked to stop, yell out, "I`m SOOO sure you can hear me thinking." Then start talking about what a jerk the
instructor is.
Bring cheerleaders.
Walk in, get the exam, sit down. About five minutes into it, loudly say to the instructor, "I don`t understand ANY of this. I`ve been to every lecture all semester long! What`s the deal? And who the hell are you? Where`s the regular guy?"
Bring a Game Boy (or Game Gear, etc...). Play with the volume at max level.
On the answer sheet (book, whatever) find a new, interesting way to refuse to answer every question. For example: I refuse to answer this question on the grounds that it conflicts with my religious beliefs. Be creative.
Bring pets.
Run into the exam room looking about frantically. Breathe a sigh of relief. Go to the instructor, say "They`ve found me, I have to leave the country" and run off.