I bought a new battery operated toothbrush this week.
6:00am - switched itself on inside the packaging. Opened it and put in tooth mug.
Next day 4:15am - switched itself on in tooth mug. Put in kitchen.
Next day 10:00am - switched itself on in kitchen. Put outside in greenhouse.
And now - it's dark, it's cold, I'm tired and my greenhouse is buzzing!