Talk:Existing Technology/@comment-32279767-20170613141956

Make swirling potions: Rheoscopic liquid inside clear glass bottles; drop a tall, thin magnet into the potion; seal the bottle and secure to a surface. Underneath the surface, have a motorized spinning wheel with another magnet attached to it. The spinning magnet below causes the magnet inside the potion to spin, creating a constant swirling 'wave effect' of glittering particles suspending in liquid- hence, potions!

Bonus: these are super cheap to make (depending on the motorized wheel you use).