Is there a spoke light that is ultrabright?
the thunderbolt comes stock with rubber straps, basically long-lasting rubber bands. the bike in the video has aerospokes, which would be thick enough to keep the light well secured.  aerospokes are uncommon though; typical wheels have 32-36 2mm steel spokes, which wouldn't provide much to grab onto.

there are plenty of other spoke lights out there which are designed for 2mm spokes.  i would check what kind of wheel you have before you go buy anything.