Excess graphite powder can be utilized in various practical ways, despite initial concerns about its usefulness. It serves as an effective lubricant for locks, zippers, and other mechanisms, making it a valuable resource for maintenance tasks. Additionally, it can be used to create electrically conductive surfaces, which could be applied to projects involving plastic tubes or even home tattoos. Some participants humorously suggested more experimental uses, such as attempting to make diamonds or creating a mess for fun. Selling the powder to locksmiths or auto mechanics is also a viable option for those looking to offload it. Overall, while there are many lighthearted comments, the discussion highlights several practical applications for graphite powder that can prevent it from going to waste.