Nah, just kidding. I don't burn things just for the sake of it: I only burn things which might be useful or interesting to know from a purely chemical point of view.
Regarging your supposed "hydrogen bomb", I have two negative points for you:
a) hydrogen gas isn't precisely easy to get.
b) that way is dirty and very little elegant.
a) A school with hydrogen gas?!?!?! God, no wonder why Sweden is the country with the highest human development index!!!!!
b) Hydrochloric acid + aluminium. Both affordable substances which give utterly cool -and potentially dangerous- experiments.
There are plenty of videos and different experiments, but this was the first I got. I'm tired and wanna go to bed
Basically it's 6 HCl + 2 Al --> 2 AlCl3 + 3 H2. Which is cool, since aluminium trichloride is a very interesting and important catalyst, and hydrogen is... well, hydrogen