This is a flatbed scan of the seed pods of Gaillardia. (You can see one of these pods in the foreground of this photo.) I used an Epson 9660 scanner set to the highest possible resolution that the scanner would actually do the scan, and imported the results directly into Photoshop.
I left the scanner lid open. The background is black velvet cloth jury-rigged over the three-dimensional pods with tape and sticks.