When presented with material that is young and lacks interesting features I will search for ones that have twists and turns. Great bonsai can be created from this rather unexciting material. Using wire to shape long and limber pieces is another way to introduce interesting shapes. Another way is to use root cuttings that often have great shapes, The pictures below are all of Ficus ‘Mystery’, a fig that is not identified yet.
To learn more about growing figs buy the definitive reference work on Ficus for bonsai. The book is a softcover, 8 by 10 inch volume, with 144 color pages, containing detailed information for the beginner as well as the advanced hobbyist. Click here for more information