A more printable version of the R2D2 thing by InnovationByLayers. While their model is commendable in its attention to detail, it was entirely useless as a printable model. I have taken the STL's into Blender and made considerable revisions both to make it manifold and printable without support. I tried my best to keep to the spirit of the design while fixing the overhangs and recesses that kept it from being something one could print on a 3D printer.
I'm still working on the revisions and I'll put them up as finish them and confirm they are fit to print. My revisions are scaled up to twice the size of the original 'cause I have an awesome large format printer.