Alan Coil says:

Another possible use for the rings — make a ladder.

Rung

Sphinx Magoo says:

Just read Blackest Night #7. The story makes me think that Grant Morrison and Geoff Johns had a long talk and this storyline is the result. It had that heady feeling I’d associated with old Doctor Strange stories but which I’d never expected to see nowadays. I’ll be looking forward to getting a White Lantern ring!

Richard says:

Not to sound all pervy, but there are other places that rings might go.

Torsten Adair says:

Well, given the rings’ behaviors, the rings should be worn:
left thumb = black
left index = red
left middle = yellow
left ring = mauve
left pinky = orange

right thumb = white
right index = indigo
right middle = green
right ring = violet
right pinky = blue

Since all lantern rings provide flight and a protective aura, a Legionnaire flight ring is not required.

EJ says:

Best thing about this will be reading Brevoort’s next emotional tweet about how DC is resorting to gimmicks to sell comics and swearing up and down that Siege is not a flop even though it bricked worse than 50’s last album.