The site incorrectly lists the Badimo Arm Cannon and SirMing’s Diamond Bling as Gear, but the asset itself is an Accessory. As a result, these accessory can only be worn in experiences that allow Gear.
Expected behavior
Both items should be re-categorized so that they can be worn as intended. The accessories both attach to the player’s hand similar to the Overseer Oversleeper: Terrible Teddy, so they should be re-categorized as a Shoulder Accessory.