There are lot of missing parts in Lego Digital Designer. Although recent bricks might appear in future versions of LDD, I think some older ones will not. I did not find, yet, a resource with missing pieces, or some substitutes. Nevertheless, I found some full designs that include some substitutions that I found useful. Therefore, I decided to create this post where I’ll add substitutes to some LEGO parts.
3137c01 with 3641