My housemate keep buying stuff but we don't have enough space in the house to keep it?

I'm sharing a place with a guy who loves to buy stuff. Literally every week he will bring new appliances or kitchen stuff home!

The problem is we don't have enough space to keep all those things. now his stuff is clutter everywhere in the kitchen & dining room which connected to the living room. Make the house look messy. Most of the stuff he bought is not even unopened! Still in original packaging.

I don't know how to talk him about it. He has his own space to keep his stuff in the kitchen, I guess it's full now.

His stuff starts taking up the whole space in the kitchen. What to do?

My housemate keep buying stuff but we don't have enough space in the house to keep it?
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