https://www.cutoutandkeep.net/projects/diy-balloon-flowers • Posted by Writing M.
Push one tack through the middle of 4 different balloons. Push the tack in the foam ball, making sure all the balloons point a different direction.
Do the same with all the other tacks, until the ball is filled with balloons, but leave a small section in the bottom open.
Push the paper straw into the open space, it might be easy to push a pen in it first cause the paper can bend.