If you try to make a Web Clip widget of a small item on a web page in Safari, you may be dismayed to find that Safari limits you to about 128x128 pixels. As an example, I tried making a widget of just the text on the side bar of macosxhints.com that says, "nn new Hints in the past 1 day(s)," but I found that the smallest size I could make it was quite large compared to most widgets, and had a lot of grey space.

The solution is simple, if not obvious. After creating the widget, just click on the "i" on the widget and then click on Edit. You can then resize and reframe the widget so that you only see what you want to see.