A tornado in a box is a great way to model vortices with students from elementary school up through college. I recently redesigned my very old plexiglass "Tornado in a Box" to be modular so that it can be easily disassembled and not take too much cabinet space in a room. As the pandemic starts to come under control there will likely be a glut of used plexiglass shields that could be easily recycled into this fun model. The video below shows the box in action.
I'll eventually add a few NGSS-aligned lessons, but for now here's how you can build a box.
Assembling & Disassembling Tornado Box