Dahszhi 5Pcs 25mm Diameter 1/4″ Female Thumb Wheel Lock Nut Adapter (Amazon Affiliate)
US: https://amzn.to/3ybx10x
DIY Super Cheap Low Profile Tripod for Ricoh Theta and Other 360 Cameras: https://youtu.be/5BhDVtOL2W0
Tripod Extension How To for Ricoh Theta: https://youtu.be/bVxrNAMfOtU