We have a bonfire at the end of every school year to burn all of our papers and such. It's rather fun. I don't know how things react when they burn, but I would choose something that has different colors, and perhaps explodes too.
If i could burn something, i would burn hair spray. so when all the hair spray comes out it ignites and becomes a flawmthrower! i reckon that would be cool.
I would burn my school, so I wouldn't be able to know what was my Maths grade, that probably sucked. Or put all Justin Bieber's and Rebecca Black's CDS, put them in a bag and put fire on them.