Extruded Tyranid icon for my daughter's army

I'll try to remember to upload a photo when we have a painted one.
These are a bunch of various sizes of a Tyranid icon. The reason for a bunch of sizes is so that it'll be thick enough to print even in the small sizes, though it is a bit hard to print the smallest of them.
You can also mash them into other objects to add details. The 40mm is pretty nice, but I'm not sure what to use it for.
Don't forget to take a look at our completely unrelated full-size, working, Lego R2-D2: http://y