If you're still looking for a co-designer, I'd be up for it.
Would be very happy to work with you on one of the things you listed, or will post a proper intro below with my own suggestions. :)
I already have a partner, but if you can't find anybody I'd be more than willing to work with you as well!
I'm pretty sure there are folks who don't have groups yet, though, so check around first.
Cool cool. Not sure where to look, but will have a poke around.
