CTs would be the easiest option for longer term monitoring. Installation is non-invasive (to the wiring), and you can either buy a power monitoring system or design one yourself.

For something portable and non-permanent, a current clamp can be used to monitor a single device.

For a quick check, you could use a kill-a-watt

5G is close to parity with wired internet…

Oh man, I’m coughing from laughing to hard