The 'A Boat' drawing is an approximation of such a process.
The boat was dawn on a Nexus 7 using Skitch.
Skitch is a very nice drawing tool produced and maintained by the Evernote team.
The underlying data is saved by Evernote.
From Evernote you can obtain a URL to a Skitch drawing.
Add that URL as the source to an HTML IFRAME tag which in turn is embedded into a Blogger post while editing in HTML mode and - presto - the drawing is publicly available.
Here's the code for the boat drawing.
There is a significant side effect: any edit to the original Skitch drawing automatically updates Blogger and appears in the post with the next refresh. Whether this is a good thing or bad thing could be debated. The modern tradition is that once a blog post is posted it should not require further editing. Perhaps this is the precursor to post-modern blogging.
<iframe height="100%" src="http://www.evernote.com/shard/s1/sh/94c80bfc-ffad-4e55-b4dd-20683860d484/8e68333b1d0f82fea10d41ef3e0701e2" style="border: medium solid #000;" width="100%">
Your browser does not support iframes.</p>