Trond and crew at idl in Norway have released a great little form building plugin for the FarCry Framework, complete with user documentation. It leverages the nested tree model, allowing you to drop custom built forms directly into the site tree. Form posts are collected in the database and can be reviewed at any time. Nice little tutorial as well explaining how it was all put together.
"With this plugin you can let users of FarCry add custom forms to their websites. Each form submission will be emailed to an address that is defined for each form, as well as being logged and available from the FarCry administration", from Trond's Announcement.
Other useful links: