XAML creation with Mobiform Aurora
Last month I talked about tools that create XAML for you, so you don't have to write it by hand. I missed one: Mobiform's Aurora XAML Designer for WinFX. This tool (which appears to be an Avalon app itself) currently has a free beta that works with Avalon Beta 1 RC. You can download Aurora if you provide an e-mail address.
Enjoy!