so this may be a little bit of a foreign idea, or kind of seem like a dumb idea, but when it comes down to it, it's something that can be way thriftier than purchasing all new knobs (besides the fact that it's more eco-friendly).
i painted knobs that looked like this, originally, for a client. he had a huge kitchen that needed all-new hardware, and instead of purchasing around 60 new knobs, he just paid me to make them look like antiqued "blackened bronze" hardware. (i actually painted a brass tub faucet/knobs to look like this too. it worked really well, and was WAY more inexpensive than buying a new faucet, which can be around $250 for the cheap ones! i only charged him $20 to do his faucet, and, believe it or not, it's really water and wear-resistant) this is a simple idea, and YES it actually stays put long-term. (i scuffed them, painted them, and distressed them, then sealed them. after all of that, they are good to go!)
anyway, this is what they looked like to begin with:
after i painted them, they looked like this: they were dark brown, then i did a lighter brown/bronze glaze on them (kind of hard to see in this pic), then did a sealer:
so that made me think, if you can do all that, then you could certainly produce your own hand-painted knobs for cool cabinets in the future. anthropologie sells really, REALLY cute knobs, but at upwards of $16 a pop, they're not really budget friendly, and what are you going to do with all your old knobs? let's face it, most knobs are pretty standard-looking, it just depends on what color they are painted. and when you start throwing flowers and birds into the mix, things can get SUPA DUPA cute. right? here are some ideas...