Missing knob on baker's cabinet

I was looking at the baker's cabinet earlier and noticed that among the things that are missing on it is one knob. They are not the original knobs that had been on it to begin with, instead being ones that my sister put on it when she got the thing, so I am thinking that I might just take them all off and replace them with new cabinet knobs, buying enough to place matching knobs on the doors and drawers of the kitchen cabinets. I'll need to wait until I have the cabinet finished, and probably until I have the whole room redecorated, that way if I add more cabinets or something else like canisters or something that need knobs, I can match all of the knobs throughout the kitchen to the same style.