Storage is an issue that most people struggle with when it comes to circular knitting needles. It is difficult to store circular needles that do not come in a case. You can get around it by finding DIY solutions that will protect your equipment. If you can, buy a unit with a case if you do not want the hassle of finding a good place to store your needles. Exposure to environmental factors like humidity and heat can damage your needles—the material they use to make it should provide the stowage guidelines for you. A small protective bag with enough space will sort you if you are stuck with no way out.