I also added the Newsreel gadget, specifying news items relating to philosophy. Then I went crazy and added another gadget - this time a slideshow of photos/drawings from my Flickr album. I love this stuff!
I then went to the article linked to from the 23 Things blog. It comprises a list of Blogger widgets. The one I tried to add was a 'Share in Facebook' widget. However, I had the same problem I had with an earlier task. Instead of adding the gadget to my page, all clicking the 'add' box did was post a link to a page about the gadget to my Facebook wall, rather than adding the gadget to my page. I need to find out what's going wrong here.