I tied a round crown sinnet neck/ID/badge type lanyard using about three feet of the glow paracord and six feet of camo or ranger green(so many colors now it's hard to keep track when working with unlabeled remnants), leaving inner strands intact, adding a swivel snap hook, safety break-away clasp, a three pass Gaucho knot sliding bead done with 1.4mm cord, another Gaucho on the snap hook with 0.9mm cord, and a couple of tiny Spanish ring knots over the sewn sections on each side of the safety clasp, using a bit of strategic super/krazy glue application on the Gauchos and ring knots.
I compared the glow paracord with the CoolGlowStuff glow rope that I've used in the past, and the glow was similar in initial brightness, quickly dimming, but still visible with dark adjusted eyes several hours later. So for a key fob or lanyard attached to some EDC gadget/gear you might want to easily find on a nightstand in the middle of the night, it performs adequately.
The cord I bought has 9 twister nylon core strands, and I've seen some of the sellers mention the outer sheath is polyester. I do not know if it shrinks up or not, but that's something you may want to check if you make size oriented items like paracord bracelets or pet collars with it.
The hank I received looks to be a bit lumpy in some sections, even visible in some sellers stock pics, which is okay if you're going to gut the cord, but annoying if you leave it intact. From experience, I've seen that with several different manufacturers of commercial paracord, made in the U.S.A., so it is not isolated to any one maker/distributor. Distributors with good customer service should take it back without a problem. I'd think they'd try to avoid sending cord out like that, but it still happens...
And a paracord key fob/zipper pull square crown sinnet with wall knot, tied with glow paracord and maroon paracord, shown attached with split ring to a Maxpedition Cocoon pouch.
The CoolGlowStuff website has been down a while now, so the source for their decent glow cord/rope is probably no longer producing it.