There is Rust-Oleum brand specialty Glow In The Dark luminous latex paint. It comes in a 7-ounce can, so I find that handy for dipping things into it. Latex is not a hard paint, though, so sometimes I find it handy to harden it with a coating of clear fingernail polish.
There is Krylon Glowz spray paint, which comes in a 6-ounce aerosol can.
There is Glow-In-The-Dark luminous adhesive tape. This comes on a large roll, and it is often stocked by stage equipment companies. This is what they use backstage to put on all of the hard items to keep stagehands from bumping into them in the dark.
Let's take a metal shelter stake, for example. If you paint the top of it where it might be hit by a rock, then the glow stuff may disintegrate quickly. If you pick just about any other metal surface on the stake, then it will last longer. How long it lasts will also depend on how you prepare the metal surface. If you roughen up the surface with some sandpaper and then clean and dry it, that works the best.
Glow In The Dark micro cord is manufactured by the Atwood Rope Company and sold through a bazillion retailers. It is only 1.18mm in diameter, so it is not the best choice for some line locks on some shelters.