A little at a time. Some items I may never use but we have on hand. The trick is to do what you can. Some big ticket items you have to save for or just keep looking.
A few of my items I never thought about buying but they were so cheap I could not resist. Some things you can upgrade depending on the $$ amount. A couple of cheap lanterns for $20 then one day if you see a deal you may pick up an Aladdin and they are great in the winter because besides light they can heat your place as well.
Just some thoughts.