So, all that's left to complete R2D2 is to basically stick all the bits together.
A bit of glue and swearing later:
Above we have R2D2 with the Sphero BB-8 autonomous robot toy. I didn't plan it (largely because the Sphero toy wasn't available when I started the R2D2 project), but they ended up pretty much exactly the same scale. That's kinda nice.
I'm happy with the level of detail I managed to incorporate into R2D2.