Generate lines connecting points. This modifier allow to generate lines on a geometry that hadn't previously (as Random Points Random Points generated inside a volume (sphere, box or any other Smode primitive) Read More , Grid Points 3D grid filled with points Read More or Particles Simulate a particle system Read More ) By checking the "generateTriangles" you can also generate faces (beware that this option is very costly in terms of performances)
After adding this modifier, you can then add a Wireframe Lines Simple wire-frame Lines with not much options Read More , Thick Lines Wire-frame lines with many options and who can use any 2D Layer as map Read More or a Tube Lines Generate tubes over geometry edges Read More even over a particle system Or even a Surface Display geometry's triangles as a surface Read More if "generateTriangles" is checked This is what we use to do this shiny plexus effect :


And this is how you do it :