Two simple laser type effects. One using a line renderer and raycasts that would work well as a laser sight on a weapon, and the other one that's more like some sci-fi scanner but that doesn't have any collision checks.
I started by playing with an idea of how to make cheaper 3d noise - it didn't pan out the way I wanted it to, but it's serviceable for this effect - the "smoke" in these lasers is the one noise texture, sampled from three directions and then multiplied on itself.