Although I just added the first plugin, I like the idea of generating parts in inkscape. That's why I am positive, that it is not going to stay that lonely for long.
Check out my blog for more information: eeucalyptus.net
Place the extentions (each one *.inx and one *.py) either in the shared extention directory or in the user extention directory.
You can also get the packed versions from the inkscape gallery if I packed them: (https://inkscape.org/gallery/=extension/)