The Sleeping Rhythm Pillow. Take plump soft item. Stuff blinking LED inside. Set it up so that light blinks softer and slower over time. Sell as sleeping aid. Profit. $180.00 is a lot of zzzz’s grandma!
Gradually, it becomes slowly, softly it leads to the feeling where the rhythm of blinking of light is calm, it is the pillow which is invited to feeling good sleep.