Balloons

I know at the last meeting there was talk of having helium balloons. I bought the balloons, but I wanted to see if anyone knew where in the school we can fill them up. I know it was said at the meeting that somewhere in the school there is a helium machine, and if anyone has any info on that it would be great. If we are going through with the balloons, we will have to make sure we find out where the machine is and ask permission before the Dine-Around. We also need to have someone (or some people) blow them up on Friday before the event. I was thinking of making crayon hot rocks for balloon weight (heat up rocks in the oven and melt some green crayons on them--they look pretty in the end). If anyone thinks this is a good idea let me know!