High-quality cloth-backed adhesive tape. Stronger, stickier, more reliable, and generally about 1000x more versatile than duct tape. Also as much as $25/roll. Fixes just about anything and everything and can be used to rig up just about anything on a photo of cine shoot. Has a strong cult-like following among professionals in the visual arts.
Hey - take up the slack in that cord and gaff it to the C-stand.