XN Sketch App

The XnSketch app is available in iTunes for $1.99 and on Google Play (perhaps for free? I don’t see a listed price)

I snapped a photo of a few of my globes from my collection and then ran it through the XnSketch app to play around with the different effects. 

BW

 

Cartoon

Halftone

Neon

Photocopy

Sketch 1

There are also several others that I didn't try. Here's a quick video to show what you can do with this app.