Okay, creepy shit. I got downstairs to find two lamps on & the power strip for my PC setup all lit up & switched on.
Windows were all locked (just been opening some), checked I'd locked both front & back doors, walked through last night's end of day routine & have no explanation for things that were off being on, especially not the power strip which requires two physical switches to be switched in a location that they cannot be accidentally pressed (each require a solid press).
I'm going to be scratching my head over this one. Not the first time weirdness has happened but this might be step up.
Downside = creepy & weird
Upside = weird & who knows, might feed my imagination