My Mom likes to carry a knife for food prep on the go. This usually consists of primarily cutting fruit. She currently has a Spyderco Byrd meadowlark 2. However, the problem with a folding knife for her is that she constantly gets the knife dirty to the point where it is incredibly difficult to open (she doesn't really have the time to constantly take it apart and clean it). So, I am loioking to get her a fixed blade knife. What are good fixed blade knives to carry around for food prep. It would need to have a good way to carry it in a bag and be less than 3.5 inches. It would be nice to find something under $45. Doesn't need to be a particularly nice steel, just would need it not to be prone to rust.