I haven’t been able to mess with it much, but setting the elevate tool to one of the blocky textures looks pretty cool.

Vorlias
(Vorlias)
2
Converted my map (in a way) to smooth terrain. 
As8D
(as8d)
3
Spherical planet. Like a couple of other people here.
(Mind, I don’t intend to make up for the core being in water, it’s cool)