I think I have most--though probably not all--of the crown items in either Throne's TC or on my designated wishlist, but I'm having trouble thinking of other royalty-themed item to put in it as well. Scepter maybe? Capes? Any suggestions?

I have a couple of things in Strigoi's treasure chest, maybe some of these could be matching.

I'm not sure if these are the kinda items you're looking for, but the first thing that comes to my mind is the Masquerade Steamworks Menagerie royalty line: The mask items on the other hand don't look that much like royalty, but they could fit the theme as well :)

[item=giselle d.e.v.i.l.l.e spotted cape]

I'm interested in this topic too since I have a royalty themed pet of sorts.