Hi there,
This is my first post so it might have already been covered, if so thats my bad. It covers a few of the books so feel free to correct me if it is contradicted somewhere or if you have things to add.
I was thinking about how Odium splintered the shard of Honor. I think that the honorblades that the Heralds wielded are actually the remnants of what is left of the shard of honor. This is why they can grant magically abilities to someone who previously could not access magic on Roshar. Also I wonder if they were all collected if they could reforge the Shard of Honor.
If this is true then it would mean that the shards of Devotion and Dominion would have items that were made from their remnants. Brandon has said that the Aons inside of the Seons are splinters of Devotion so what are the splinters of Dominion? Also what would happen if a splinter of Devotion, a Seon, and a splinter of Honor, an honorblade, were combined like when Sazed combined the shards of Ruin and Preservation in the Mistborn series?