As a miniaturist I love what you have done! My first thought was finally someone else who does something like what I do! Lots of good ideas I want to try. I love the tulip. I make bookmarks and I might try to fit one into a bookmark.
Where did you get the directions for a 6" mariner's compass? Always wanted to make one but I don't like paper piecing so I haven't tried. I do have a "Block" I make that allows for something similar just not as intricately disected into as many points. It would make a beautiful hot pad! I make a lot! of hot pads. So I am always translating what I see into that format. If I have to try paper piecing I might be tempted for this block.
I know what you mean about throwing away only slivers. I do that too. A lady saved scraps for me from a quilt she made and they were 1/2"-3/4" wide. I made her a checkbook cover and a coin purse by strip piecing them and cutting out blocks from the joined strips just to prove I could. It was fun to challenge myself like that. I use a scant 1/8"- scant 1/4" seam allowance on something like that.