Free time physics Project

Viper2838

I was wondering if anyone could aid me in finding an idea for a new project. I was quite sure where to place this thread, so forgiveme if its in the wrong place.
School has just started, and as usual, I am stuck with loads of free time until my classes get up to speed. I figured I would be able to put this time to some good use.
I have done the usual potato guns, and dry ice bombs, and im looking for something a little more challangeing. It would be nice if your ideas would be a tad bit less likely to get me arrested then my previous endevors.
Thanks.

Antiphon

How about making a 10-foot tall Tesla coil?

If you do it correctly, it will launch 10-foot long sparks or longer.

Pythagorean

build a mini-fusion chamber!

http://www.livejournal.com/community...ks/276039.html

Geoff St. Germaine

Build a spherical tokamak. That's what I'm doing.

neurocomp2003

highschool? learn to code your own physics engine...particle systems, rigid bodies, deformation materials, EB stuff...etc.
using real physics and not psuedo modelling.

Viper2838

I have tried the programing scene, but I have had a hard time teaching myself a ligitamate language.
Yes, I am a high school senior, so I dont have a large budget, which is part of the problem. And my school decided a few years back to end shop class, so I only have limited access to machinery.
How hard would it be to build some thing like a minature linear accelerator?