My workshops involve a lot of movement. The easiest way to learn to fly a kite is to recognize patterns in the kite’s motion, so I put on a kite suit when I’m teaching kite flying. Observing the speed and intensity of tree motions is the best way to way to estimate wind force above the ground, swaying like a tall oak and watching a timer.
Kites and balloons are perfect for group workshop production, because most of the cost of a kite or balloon is in the labor of assembling it, not the materials. Many high-performance, low-cost materials are rare in commercial kites because they aren’t easy to mass manufacture. Bulk purchases of materials and a few good few tape dispensers and everyone can go home with a flying machine.