I know it looks like it was kissing with photoshop but the lighting was really bad when I took the photos .-. then I got a bit carried away with the editing but I kinda like the result C: mostly the second one. So they were inspired by the thingies on his majesty's crown. I think both would fit Thrandy cosplays nicely, they're not difficult to make.
Thranduil belongs to J.R.R. Tolkien of course