Good suggestions Paul.
As I see it they might be classified into:
1)Workshops by SPG members
2)Workshops sponsored by SPG members with outside teachers
3)Workshops sponsored by other organizations,
4)Articles/Links by SPG members,
5)Articles/Links by other organizations.
So we might create some pages on the wiki to solicit contributions to complete our wish list of events/Articles, and see if we get any takers. Of course all of us can undertake to do certain wishes on our own too. SOme of the subjects you mentioned could be treated as Articles/links until someone steps up to organize a hands on demo. Like the annualized solar. the link you provided should be on the wiki, and maybe later we could get the author to make a presentation here.
I'm interested in the rocket stove, so I'll try to get something going with that. And I'll try put some links to the other subjects on the wiki.
Keep the ideas coming, everyone.

steve