here's what you do when you still have half a tank of helium after a birthday party.. blow up a bunch of plastic bags and tie them with a string like they are kites. I had loads of fun playing after the kiddo went to bed, with my mum, my aunt and hubby as accomplices. just because were wanted to deplete the tank. after all, it's paid for so why waste? here me with some of the balloons. and my living room ceiling filled with them. and yup. I actually love helium balloons. I would be really happy if someone gift me with a huge bunch of balloons! I think…