I don't think I will be allowed to join you because I have almost finished my house declutter!!
But I can tell you all what I did and it might help?
Bought a load of plastic storage boxes from homebase (5 for £24) X 3
Went through the loft to start with and chucked out baby stuff, took things to charity shop and advertised things like car seats for free.
Then put everything in plastic boxes and labelled them. They stack so neatly!
Put all the kids old drawings and school stuff in a storage box in loft and left a file each for them in the top of the toy cupboard. So each time they make something new it goes in there.
Went thro all the kids clothes and ours and charity shopped anything that doesn't fit or isn't worn.
Packed up kids clothes for next size up in plastic boxes, labelled and in loft.
Went through airing cupboard and chucked out old towels, old duvet covers we don't use, old pillows and duvets etc.
Cleared out old toiletries and put a plastic box in airing cupboard with things like loo rolls and spare toothbrushes in.
Organised my underwear drawer with one of those IKEA drawer packs - so socks, pants, bras etc all have seperate compartments.
Went though all our shoes and threw out ones that aren't Comfy or too small. Got a shoe rack for the utility from Argos and put an IKEA shoe cupboard in there too.
Got rid of piles of books and kept them ones I want to read again on a shelf above my wardrobe.
Cleared out the cupboard under the stairs completely - put all winter clothing in plastic boxes in the loft
Now we can use the cupboard for kids toy storage.
Put up two rows of coat hooks in coat cupboard at kid height. So they can hang and reach their jackets and school bags.
Got a towel unit for the bathroom and rolled up towels in one shelf, got fabric boxes from IKEA for the the other two shelves and used one for hair bobbles brushes and spray etc
Then the other for hand towels and loo roll
I've still got to do my kitchen cupboards so that's another day but ive already done the two messy DIY drawers and the paperwork cupboard
Think we took four car loads to the tip and two to the charity shop and it took about four days work
Well worth it tho!!