You can make widgets for your own profile, for a search string, for your favorite tweets, or for one of your Twitter lists. Start at the bottom of your Twitter web page by clicking the “Goodies” link. Select “Widget” and then choose the type of widget based on where you want to display it.
Next you pick one of the four types of widgets: profile, search, favs, or lists. You customize it with choices about the number of tweets, the colors, and other variables. You can test your settings as you customize. When you’re finally finished, you grab the code and paste it where you want it.
Here’s one I made using the search function to find tweets about SXSWi.
If you have a particular interest or list that you want to feature constant updates about in a blog sidebar, this is the perfect way to create it.