A real obvious suggestion on a target is a steel plate. That's what I shoot the most of on my range days. Of course, the plate doesn't do much other than fall over, but the bullet splatter would likely make a fantastic photo. You'll need protection for your devices, or they'll get fragged in short order.
I don't know about your area, but lately, "tannerite" has been the very popular target in the United States. It explodes when hit, and would also make for some wild photos. Again -- your equipment might certainly get damaged.
I think the targets you've shown thus far are tremendous. The pictures seem to be all you would hope you might see, if you could pause time at the moment of truth. To say that I am impressed is an understatement.
