Dude we're not looking for Alia's sex toys here, lol. I think we could have something like + + + changing the color depending on the number of reports.

+ is also universal symbol of help, aiding like the red cross.
I'm also going to give the best design my last 6 sMerits.
There is no need to tie the reporting to nuke bombs, we don't want to promote violence, we want to spread the peace and spirit of helping the moderators.