Books that are too young for eldest but too old for youngest - bookcase in the kids' room. Reduce it to those they really love. Buy a kindle and use the library.
Clothes one size too small for me - get rid of them. They aren't that motivating, or you'd be wearing them. (It's taken me many years to learn this!)
Winter clothes - suitcase on top of the wardrobe.
Household paperwork - one expanding file for house. You need to keep on top of shredding paperwork... There's not a lot you actually need to store.
Tools - tool case in cupboard under sink.
Lightbulbs/batteries/Sellotape/wrapping paper etc - you need no more than one bulb of any type at any time. If you have two rolls of Sellotape, bin one! Ours live in chest of drawers in the hall.
Christmas tree and decor - get a small, real tree each year. You probably have too many decorations. Ours are in a large cake tin on the top shelf of my wardrobe.
Halloween decor - bin these! 
DCs' old school work/drawings - rationalise these. Best one or two pieces each year. Photograph others if you want. Stored in a box file per child at top of husband's wardrobe.
Car stuff eg oil/ice scraper - chest of drawers in the hall, along with gloves, dog leads, poo-bags etc.
CDs - small bookcase in dining room
DVD box sets - bookcase in sitting room
Books you want to keep but don't need 'out' - if you don't want them out, why do you want them at all?
Spare extension cables - how many have you got, and why?
Musical instruments - do they really get played? If so, I'd give them space in the dining room, or under the chest of drawers in the hall. But if they don't get touched from one month to the next, I'd donate them to so one who'd appreciate them.
Old sentimental stuff from each family member eg report cards - file with birth certificates etc.
Photos - frame them and put them on the wall, in albums on book cases, or scan them and bin them
Sewing box - can't help you here... Mine has gone feral!
Stationery - rationalise it. What has sat unused for the last year? Bin it/charity shop it. The rest goes with the wrapping paper.
Arty/crafty stuff for DCs - as stationery.
Excess hair/make up/toiletries/jewellery only used on special occasions - bedside cabinet.
Special occasion clothes - how many do you have? Time to get rid of some? The rest, as winter clothes.
Unwanted gifts being saved for regifting - anything bulky, just charity-shop it. The rest, as stationery.