Nicely done. Did you repurpose that skull gate from a smaller set? I think I have that one, including the single gold tooth. I've got dozens of minifigs and kreons I should build homes for.
I still have the Castle set 6081 shown in Denyer's link, mostly assembled. The tree and flags are gone, but everything else is intact. That slanty black brick with a yellow 4 looks familiar; I may have owned and disassembled that at one point.
A few years ago, I remembered a Space LEGO set called the something Dart for it's long nose. So, I looked up the instructions to rebuild it. I thought it had round tiles for a nose, not round bricks, so I had misremembered the only part of the build that I actually remembered. I rebuilt the rest of it according to the instructions, but built the nose as I it existed in my mind.
More recently, I made some progress on my Gladiator Voltron. I went through old builds looking for parts I needed. When I found them, I'd rebuild those old builds with alternate parts, since I still like them. So, scavenging took a while. Some off-brand mechs that use KO Kre-O Optimus heads lost ankle articulation, but everything else I scavenged from is intact.
I'm mostly done. The black bot just needs smooth (studless) tiles for his shins and left forearm. The red bot needs shin tiles, grey wrist tiles, and red connectors to replace the grey clips in his feet. The blue bot needs the most parts: smooth tiles for the shins, torso, and arms, Technic bricks to replace the dark grey ones in his arms and torso, blue clips to replace the dark grey ones in his legs, and grey wrist tiles.
I'd look for sets to buy to finish him, but I mostly need smooth tiles, and there aren't going to be many, if any, sets that focus on those, since you can't build much with studless pieces.
Edit: I was at Dollar General this weekend, and found Classic set 11008, which focuses on tiny houses. There were stickers on the box saying this product was only for sale at Dollar General, with a number to call if it's found elsewhere. So, I guess Dollar General is getting exclusives now, and expect consumers to enforce it?
The suggested builds are an igloo, lighthouse, castle, windmill, and two houses of maybe 10 to 50 bricks each, with a few dozen bricks leftover. There's more than 20 shades of colors, but only a few of each. For example, there's 2 lavender bricks, 4 purple bricks. The last Classic set I bought did something similar. I think I counted over 30 shades in that one, again only a few bricks of each.