I am in the middle of this de-cluttering too. I now we can live with less stuff because we did it when we lived in a one room house in Mexico. I had wood rails for clothes, 2 shelves, a table made from a packing crate, 4 chairs, a coolbox, a stove, a pressure cooker and frying pan, a fan, a foam rollup mattress and three Yucatecan hammocks.
We came back to the UK with two bags and tow boxes of books and less one husband. Since then I have had a two room apt then a three bed house with great storage but now we are all (DH new dd and me ds1 and ds2 plus 5 years worth of stuff) squeezed into a small (uk small) 2 bed house. We had to purge a lot of stuff just to all be able to fit into the house in the first place.
I am feeling quite literally claustrophobic. I am recycling, freecycling, donating, composting....
But we have a wardrobe full of clothes 'we might need' like suits and dresses and smart shirts and boxes on top full of nostalgic tat (dh) and newspapers from days like the fall of the Berlin wall and the first Iraq war (mine which mu mum returned to me when we had the big house) Dh also has boxes of cds which he bought as a teen and whenever we sort through them he keeps more that he sells.
These are the things which I am finding it difficult to justify keeping but at the same time difficult to get rid of.
My two things for a baby would be (apart from boobs)
1 Sling(s) pouch (home made) and a wraparound like a didymos
2 A hammock - a silk one if I was pushing the boat out!