That corydalis lutea is especially nice-looking, Karen. It sounds like it's a very useful and tough little plant as well.
So far, in WS containers, I've done these -
Veronica gentianoides
Alaria petiolata
Papaver paeoniflorum "Candy Floss"
Veronica austriaca teucrium
Anemone baldensis
Papaver paeoniflorum "Black Peony"
Anemone patens wolfgangiana
Geranium phaeum samobor
Hydrophyllum virginianum - Virginia Waterleaf
Gentiana crinita - Fringed Gentian
Camassia scilloides - Wild Hyacinth
Heliopsis helianthoides var. scabra - Yellow Ox-eye
Geranium Jester's Jacket
Hypericum androsaemum - Albury Purple
Primula Japonica
Penstemon barbatus - Cambridge Mix
Illinois Bundleflower
I've held back half of the anemone seeds to try indoors, since so far, that's the only way I've had any luck with them germinating. I'll keep trying the WS method however, since so many sources say that this will work for those seeds.
The Geranium phaeum samobor seeds were so cool-looking that it was almost difficult to plant them!
Hopefully, I'll get a plant out of it though, and then I'll be able to collect more of these interesting looking seeds.