I was Having Problems Trying To Create a Custom Accessory For a Humanoid, I looked up tutorials but found that there are none, i searched for hours and found nothing on how to this yet its in so many games! Someone told me that its very easy but did not explain it to me. So thats why i'm Here. (What im trying to create would be Either a Wristband or a Hat
You cannot, traditionally, make a custom accessory. You could make a 3D model in software like Blender, upload it as a Mesh, and weld it to their character.