I'm looking to use ten balloons filled with hydrogen and oxygen as a replacement for cannon fire in my school's performance of the 1812 Overture. I'm concerned about safely storing them for a couple hours in a way that will not risk generating static, or any other potential for popping and/or detonation.

I was thinking of building some sort of ceiling out of wood with some aluminum foil connected to ground to store them under until I need them. Does anyone have any other ideas? Would my idea work?

Edits to clarify:

• I will be doing this with the advice of professors.

• I'm not using party balloons. Much smaller than that. Party balloons would deafen people.

• I won't store them in one place. That's a good point.

• I won't store them for so long either. We can work around the time limits of hydrogen leaking out of the balloons.

• We have ventilation that will deal just fine with whatever hydrogen does escape.