Following from an issue of Nature on the harnessing of rain drop energy sometime ago at “Tech Briefs Media 2020”; subsequently, I thought to propose these two related energy ideas that may be useful if you considered them, viz:

1. Pressure from or to seats in vehicles, etc. harnessing and conversion to alternative energy

2. Similarly, harnessing of pressure from seats, etc. at Stadiums during games or other functions; also from the grounds etc. where the teams, audience, etc. are.