Here’s the latest version of ScriptBook, a user interface widget for loading Installer scripts by clicking a link.
This one has add/remove buttons that save scripts as strings in a method (i.e. #scriptsData), so you can save your scripts in SqueakSource. The idea is that you open a fresh image, load ScriptBook and then click to install.
As usual, it comes pre-loaded with several popular scripts. Thanks to Hannes for the idea for the Transcript button.