We were dairy farmers ... my husband headstone has a cow engraved on it, along with our farm name. And too, I chose a large rock from our farm, in place of the traditional marble/granite headstones.
The cemetery has lots of different engravings significant to the individuals ... a set of farm buildings (easily identifiable to the deceased's farmstead), a vintage corvet (and others with "their" antique car), fire department logos and fire engines, photos (embedded behind glass and on the granite, and they seemingly never fade), books with titles on the edge, masonic emblems (and other logos), stalks of corn/wheat, and 18 wheeler, ... and more!