This is a fairly specialized case, but if you paint watercolors for a hobby you might be interested. I've been a long time reader.
These CDs* contain individual issues of Watercolor Artist magazine. I've got the 2001-2005 and 2006-2010 collections. They are in PDF format and heavily dependent on color illustrations, so I would only recommend reading/viewing them on a tablet or possibly a computer -- I read them on a generic brand 10.1" Android tablet. I really don't think they'd be worth the effort on an E Ink reader.
The annual and 5-year collections are all being discounted right now. Even at the discount they're not cheap, but I like them.
http://www.northlightshop.com/art-ma...-artist-cd-dvd
* A couple of the single year collections are available as downloads, but I've never gone the download route.