Helix and Spiral: Immerse Helix or spiral in a soap solution, take it out gently without breaking a soap film.
Mobius: Immerse the mobius wire frame in a soap solution and take it out, and then pop soap film from a center.
Ring with the thread loop: Immerse the ring with a thread loop in it and form a film with the loop caught in it. Then, if the film is broken inside the thread, the thread is quickly pulled out into a circle (as shown in the diagram).
Ring with wire arm: Immerse the ring with a wire arm in a soap solution. If soap film is not broken from any sector the arm will be caught in the film. If soap film is popped from one of a sector the surface tension in a soap film try to pull the arm (as shown in the diagram).