[nuc1e0n]

I approve of this, but its hardly novel. Web browsers were originally intended to view flat html documents with hyperlinks between them. The concept of a web app is itself a 'folk' repurposing of technology.

Another might be the way blocks in minecraft are repurposed to make all sorts of elaborate redstone machines such as automatic farms.

[mikewarot]

Also, Minecraft and other games have been used as covert communications channels.