DIY a Gas Fire Pit for a One-of-a-Kind Outdoor Space Building a fire pit can be a fun DIY project, but it's hard to know where to start or what materials you need. Many people want stone or brick fire pits for their backyard, but without a fire pit kit, you'll have to light a wood fire that's difficult to manage. The Firegear DIY Fire Pit Kit makes it easy for you to build your own round gas fire pit. It has everything you need, including a stainless steel flat disc, natural gas burner, flex fra