It is my intention to build a Farnsworth Fusor nuclear fusion reactor device for purposes of:
b) Showing off (just a bit)
I was inspired to do this when it came up - now you can believe this or not - as the Random Article selection from the sidebar on Wikipedia. I want to build one with a bell-jar vacuum chamber. I might not be posting for a while, however, as I'll be planning this for quite a while first. I think, however, I should point out that I am twelve years old as I write.
There is a mine of information on the Fusor here.
Wish me luck!