I am so glad you asked, because you know I've been keeping lists! You can check out some of my ideas in this thread, but here's a recap of some highlights:

Interior

• Thrones - Ornate metal and stone; "elven" (wooden with art nouveau flourishes); "evil" (skulls, spikes, etc.)
• Regalia - Crowns; scepters; orbs
• Couches - Both "regular" and Roman-style (I think SS4 only has chairs that I make extra wide for couches)
• Mage/Sage Furnishings - Globes, astrolabes
• Ornate Staircases - Maybe modular so you can construct your own (left, right, and center for bottom, middle, and top, in stone and wood, with and without varicolor carpeting)
• Musical Instruments - Upright and on their side (lutes, harps, harpsichords, drums)
• Ancient Tombs - Think Indiana Jones-style stuff, like idols

Exterior

• Gardens - Varicolor flowers, rose bushes, berry bushes, exotic/carnivorous plants
• Tiltyard - Quintain, pell, horse armor
• Topiary - Bushes trimmed to form the shape of animals and mythical creatures
• Statues - Riding and standing free. Royalty plus archetypical character types (sword fighters, archers, mages)

Building Construction

• Flagpoles - Upright and on their side, separate from flags for flexibility
• Flags - Varicolor top-down and on their side
• Gargoyles and Grotesques
• Clocktower - Clock hands on side of building; bells for belltower
• Spires
• Façade Ornamentation - I don't know the proper term, but here are some pics I took to illustrate

I blame my eyesight and my refusal to get proper prescription glasses. Even though I often click on every symbol to see it closer, I don’t recall doing that with the dragon, so I only saw the thumbnail preview. I would absolutely have used it on my dragon landing pad on my Sea Elves Harbor.

Never mind, I see it in Marine Dungeons. How funny that I've never noticed that one before, given how much I've used that brass inlay and keep hunting for dragon inlays. I think I thought it was an insect.

Oh, I see. In order to do the brass inlay, the brass sheet would be over the rest of the image. Now I'm following. Unfortunately, I don't have a solution. That's a great dragon, by the way! Is it a standard CC3+ symbol or is it your own?

The trick Sue taught me was EXPORTSETMPPP 40000000 (that's 40 million).

Is your dragon a magenta or varicolor symbol? I'm trying to wrap my head around what it's doing.