Jethro wrote:
... they'd pass a law mandating a common voltage, and connector for
charging mobile phones and bluetooths (etc). That way instead of
needing 8 chargers I could make do with one. Imagine the resources
you'd save if all phones shipped with no charger ... imagine the plug
sockets and extensions you'd save on.

I completely agree. It has baffled me for a while why we all need
bespoke power connectors for different equipment when 99% of it could be
charged from a single 5V 1A supply.