I've made PlotKit & moo.fx widget for TurboGears
moo.fx is a super-lite javascript effect library
PlotKit is a javascript svg web diagram plotting library
Both are available on CheeseShop, youcan easyinstall them by following commands:
$easy_install moofx
$easy_install plotkit
You can found them on TurboGears CogBin too.
enjoy!