Hi, I fancy working with my new class (Y1) to make a birthday display on transition day. Want to do hot air balloons with month below and children models in basket. I don't have any washing lines as the ceilings are really high, so wanted a hot air balloon shape (or just a sphere) cut in half vertically (a semi-sphere?!) to stick on wall so it is 3D display. Hope this makes sense! An ideas for what I could use for the half balloon shapes, please? I'm drawing a blank. Thanks Char.