So do you think when Green Lantern makes a vehicle hard light construct, do they need to make a hard light set of keys and keychain or do they just use the fantastic 2 inch diameter Green Lantern Symbol Color Pewter Keychain? There are pros and cons to both; the pros of a phantasmal keyring is that you can kind of make it will. The cons being that do you really want your keychain tethered to your power battery? You can barely keep a cell phone charged! Made from a hard enamel, the Green Lantern Symbol Color Pewter Keychain is clearly the better choice. Clearly.