We have a Nativity in our house that is kid safe. So naturally the star quickly went missing. Thank heavens it was the monochromatic part with the simple geometry.
A little measuring of the peg with my calipers and it was off to Blender. Rotate the default cube 45 degrees, subdivide in the X and Y, pull the corners out and triangulate top face and voila, a new star. I'm still not completely in the habit of using the bevel modifier, so the bevel on the tops are (gasp) permanent but for a one-off project it's just fine. I considered taking some license with the design but in the end I opted to make something that wouldn't stand out.
Then after printing it got a double dose of the vapor smoother. I may have even dropped some of the acetone condensation on the middle of it. But it made it indistinguishable from the rest of the set, so I say mission accomplished.