Brackets, Curved Slopes w/Cutout, and Bricks w/Stud on Side.
Round Tiles, Stadium Tile, Brackets, Clip Tiles, and Headlight Bricks.
The Questions:
Can you build something -- a frame, station, or starship -- right away? Yes. (+5)
Is it below, at, or above the golden ratio? Below. (+5) (The Golden Ratio is $0.10 per part.)
If you can't build a frame right away, or choose not to, does it have parts you should be able to put into use right away? Yes. (+5)
Does it have more than a handful of immediately useful parts? Yes. (+5)
Score: +20 (A+). I like it but, I feel like you'll need two of them to make something substantial.