If you want to make a batch of bread or you are looking for something that isn't going to spoil in a day or so, consider sourdough bread instead of yeast breads. This kind of bread has lactobacillus bacteria that produce natural antifungal compounds and has higher acidity. The longer fermentation it undergoes means it loses moisture and hardens slower than some other loaves. Sourdough bread is much slower to develop mold because it has more microbes.