When looking to reface or simply renovate your kitchen cabinets, or the cabinets in any room for that matter, replacing the current set of knobs and handles must be one of your top priorities.
In some cases, all that you need for your renovations is simply replacing the knobs since this little detail can in reality produce a great effect not only on the cabinets they're attached to, but also the room itself.
You don't necessarily have to get anything overly fancy or expensive; get something which fits your room and the atmosphere you're trying to convey in the house.
In most cases, the installation process usually takes practically no time, that is if you are capable of re-using the holes left there by the previously installed doorknobs.
And even if that isn't the case, drilling a few holes is hardly a daunting task requiring time and energy.
There are also other areas in the house which would benefit from having the knobs and handles replaced on the cabinets; the bathroom, the bedrooms and the garage.
For the bathroom, I'd recommend you get doorknobs made out of something sturdy and resilient to environmental hazards such as moisture and humidity; stainless steel would be a good choice, since it has the afore-mentioned qualities and usually fits right in with most bathrooms.
Other materials which prove to be resistant to damp atmospheres include plastic and glass.
Make sure that whatever you get, it's rust-proof.
The easiest knobs to integrate into a room are the glass knobs.
Their shiny and transparent surface matches with pretty much any kind of decor, yet they come at a more expensive price, so I suggest you install them in rooms with less cabinet doors so as not to let it suck up too much of your budget.
In essence, the most important factor to watch out for when selecting doorknobs for your cabinetry sets is whether or not they fit the style of the room, along with making sure that they aren't damaged and will resist to the harsh environment they'll be in.