CaDNAno: design three-dimensional DNA origami nanostructures
cadnano.org
cadnano.org
On the github repo I noticed that you can convert your designs into 3D printable STL models, very cool!
Wonder if you could do something similar with 3D printed shapes. Using static or something - design the shape of the elements to express an uneven surface charge and then design a range of such shapes to express a composite shape when shaken...