It just wouldn’t be the same if we didn’t delve into the strange and novel every once and while. The ‘Firefly Mouth Swoosh’ for kids includes a cap that lights up to indicate ‘time to spit out’. Once the mouth wash (the bottles purple, take your best guess on mouth wash color but let me remind you of purple ketchup) is poured from the cap the 30 second timer engages. Once 30 seconds has expired the cap flashes.
Mouth Wash with Light-up Timer Cap [StrangeNewProducts]