Beautiful large rug, circa £500 down one week, dog had diahorrea all over it. Did in fact clean it and still have it, but was a pain to do.
New hob, it's a while ago but around £600 I left a plastic mixing bowl on it and hob was warm, it melted, ruined hob, still have plastic mixing bowl.
New TV, I put a candle too close, ruined.
I put gothic candle sconces above a fireplace, used for years no issues. One night I looked up and the wall was on fire. Scared the shit out of me, I've never used candles since. Cost loads to clean, repaint, fill in holes from sconces etc.
Bought a new weighted blanket, dog got urine infection, pissed on it, again washed it and just fine but it had to go to launderette which is a pain, it was heavy, think 11kilos so no chance in my own machine, and getting it to launderette and paying almost as much as it cost me new argh.
Brand new kitchen, finally fitted previous day, I took a bottle of wine out and proceeded to turn round super quick and shatter that bottle on the edge of the worktop. Left a tiny gash that pisses me off every day.
Brand new sofa, my first ever brand new, I'd always had second hand before, sat down with pint of lager, yep, dropped entire pint on sofa.
Theres way more but I cant remember them all right now.