You can post wherever you think people will see it.
You can post on Project redcap.
You can post it here (like [url]https://forum.atlas-games.com/t/thirty-ish-verditius-items-for-november/7373/1] Redcap items I did one year, or last year Imreai did a realia a day).
You can post it on a blog (like Timothy Ferguson will be doing with his Games from Folktales blog, or ironboundtome will do with their blog)