Old Christmas bulbs are a common problem, and there are several ways to handle them responsibly. One option is to recycle them through a local recycling program or a Christmas light recycling program. If recycling is not an option, bulbs can also be donated to thrift stores, schools, or churches. Alternatively, they can be used as decorations, such as stringing them together to make a chandelier or garland. However, it's important to avoid throwing them away, as they can be hazardous to the environment.