Good thread OP.
I bought made to measure blinds for three kitchen windows before the kitchen went in.
Bought crockery, kitchen towels etc to match but decided to go with a different colour kitchen in the end..... stupid mistake.
Bought white cotton bedding for a two bedroom cottage. Went crazy and now have 10 pairs of all frilly duvet covers & bedsheets, 22 pillow cases and 5 bedspreads.
Made to measure curtains for one of the bedrooms and livingroom are thinly spread. Can't even remember if I researched or let the curtain people do as they chose.
Had a friend with a discount card at a furniture shop, yep, went in like a bull at China shop and bought things not suitable for the cottage.
Got rid of a couple of good quality items to make way for the discounted ones but wish I hadn't.
Truffle Sofa from Loaf which DH loves but it's so low!! Have to rake a deep breath and hold on for dear life every single time I get up from it.
A garden table which is metal... why!!!
Had always wanted a wooden one but last minute panic in the sales.
My new upgrade phone. Does all sorts of fancy without the option to do basic stuff like I had in my old one.
Too many mirrors.
Too many cushions and covers.
Too many bath towels and mats.
Have everything now but we're still 5 months away from moving in, so needn't have rushed.
Mostly bity but does add up, so much water money.