I still have the Paper mate pen that I had at school 49 years ago. And yes it did get plenty of use.😊Must be something in that as I'm still using the same pen I used forty years ago. No refill yet.
On energy saving---
Showers use a lot less water and energy than baths.
By now everyone should have energy saving light bulbs. They cost more to buy, but use next to no electricity and last for years. Still turn off the lights in rooms not being used though.