Silica gel packets, they come in just about everything from medication containers to shoes (sometimes) and most people just throw them away not knowing their full potential. Most think that the silica gel packets are a one time use application and that they must be no good once they have been sitting in the open for a while, well I am here to tell you that the silica gel packets can be reused multiple times.
What silica gel packets do, is they absorb moisture from their environment and then they hold it in the gel. After a while they do lose their ability to absorb more moisture and it is at that point that most people just throw them in the garbage, when they are essentially throwing away something that is useful, versatile, recyclable and money.