You could use leaves or vines of some sort as a starter.
Otherwise, I would use a clock, watch face, or similar item standing up as a starting point.
Or if you know this person's hobbies or likes, use something related to that. Maybe tools, or bullet casings, or wheels from a toy truck or something.
I think once you get an idea of what you want to do, it will be easier then you think.
Just be sure to have fun!