The main thing is having somewhere to keep things even if it's just a stack of boxes. If you've got a normal amount of furniture in your home the real issue isn't your furniture though, it's that you've got too much stuff.
I'm finding 5 coat hooks per person is a good number.
One clothes chest with 5 deep drawers in it per person, I've got IKEA. Underwear in top drawer, spring/autumn clothes in 2nd drawer, summer clothes in 3rd drawer, winter clothes in 4th drawer and pyjamas in bottom drawer. Ornaments/photos/tech/lamps on top
Floor to ceiling shoe shelves in the porch
Six boxes and a set of drawers for crafts and they have to fit in there no spilling out
Set of drawers for the bathroom, one per person for toiletries, one for medical stuff that you'd use in the bathroom. All other medical stuff under the kitchen sink
Cleaning supplies, bin bags etc in a kitchen cupboard. Paper towel and silver foil etc in another
Large boxs for blankets, towels and bedding at the foot of the bed in main bedroom
Stuffed animals on beds, toys in boxes
I limited DVD/CD to what fits in a small Kallax unit
Dressing table for all my makeup and hair accessories, drawers underneath for hats/scarves/gloves/swimsuits
"Junk" (it isn't, it's all genuinely useful eg candles, batteries, chargers, tools etc) cupboard in kitchen. These things live there. Nothing gets put in there "to deal with later" or because "it might come in handy". Getting rid of a general junk space was the best thing I ever did. That one junk drawer took me 5hrs to sort out initially!
Important paperwork in a small filing cabinet
Everything else/duplicates is in boxes or piles on the floor/tables etc and most basically needs to go. A few things need to be found a home
The Really Useful Box is brilliant, you can stack them floor to ceiling with no danger of collapse and you can see what's in each one