Add this web page to your favorites or drag the bookmarklet to your bookmark bar. Go to Wikipedia. Find articles that you want to put into your book - click the link from the favorites - and build a "collection" in Pediapress.
You can convert your collection to a PDF or have Pediapress turn it into a printed book for you. The formatting is very nice. A portion of the proceeds of each book will be donated to the Wikimedia Foundation to support their mission.
Check it out: http://pediapress.com/collection/
