Dec 2017: Improved version available: https://www.thingiverse.com/thing:2684486
I have designed a Spaceship to fit underneath my Delta 3D printer - Geeetech Rostock 301.
It is my first printer and not the easiest to tame people tell me.
I choose it for it's 3filament mixing feature, borrowed from the Diamond Hotend project.
Skipping extruders and having no cooling fan were my biggest problems - after the bedlevelling.
I plan to post my designs on Thingiverse soon - and a link to them here - Poke me if you're in a hurry though...
Aha: 05/mar/2017: here is the extruder #2 already: http://www.thingiverse.com/thing:2160684
And 16/apr/2017: the cooler: http://www.thingiverse.com/thing:2253022