Windowbox plant to houseplant?

Our new apartment has more space and better light for houseplants, so I'm trying to expand my collection (anyone else in Pilsen want to trade cuttings?). I'm thinking about bringing some of the plants from my windowboxes inside.

You might have noticed from my pictures that none of my windowboxes are actually in windows. Well, they were, when we lived on the north side of the building facing the street.
We moved them to our current alley-view apartment (much to the disappointment of our neighbor) but haven't mounted them so they're all at foot level.

This Cordyline is a houseplant candidate. I have two of them, and they remind me of New Zealand.

These soft-looking plants are asparagus fern 'springeri' and can live for years as houseplants according to the internetz.

I decided this year that I really like nasturtiums. I planted this one really late and it hasn't bloomed yet (those are petunias peeking out on the right). I didn't find much about them as houseplants. It sounds like it might do ok as long as it gets a lot of light.

This is a terrible picture of my purple sweet potato vines because I had to stick my arm out over the railing and point the camera at the plants. Not recommended. Anyways, I think they might do ok as houseplants too.

Any suggestions, wise readers? None of these are hardy through Chicago winters, so I figure I might as well give it a shot.