Here are some old TG09 images based on small structures like coral pores or wood.
(http://farm4.static.flickr.com/3280/2624872843_c30c04b639_o.jpg)
Wood
(http://farm4.static.flickr.com/3005/2624874481_7b5e2b5063_o.jpg)
coral
(http://farm4.static.flickr.com/3171/2624874007_21d1dcd500_o.jpg)
Another one
(http://farm4.static.flickr.com/3150/2624873489_d0181ffda8_o.jpg)
Just put the structures on my scanner to achieve grayscale images which represented depth quite well.
I think I will try how good it works with TG2.
I like "Wood" No. 1 and "Another one" ;D
thats awesome. maybe you could try a shell, or something like that.