Reflector cap/diffuser for TN40S?


as TN40S is my biggest light, I was just wondering if there is anything usable as either a reflector cap to protect it during transport or even better something usable as a light diffuser. The head diameter is 10cm, for now I transport it in a nylon “tacticool” pouch. In this VIDEO there is a TN42 with a photography flash diffusor, maybe it would fit also the TN40.