HARD FROST!

We're supposed to have lows below freezing (31º, 28º, 24º, 29º) for the next 4 nights. And of course I gambled and planted beans. Cause really, when you have temps in the mid-80s for days on end, you don't think about winter coming back.

OK, so if I lose the beans, that's fine. I don't think they've even germinated.

But I have lot of other things in there too: green onions, beets, chard, radishes...

Is there ANYthing I can do to save them? I have a translucent plastic shower curtain and also could maybe cover up with other things. Electric blanket? (just kidding on that, if only because I don't have one)