first frost came early -- can I still save seeds?

I woke up to some rather frosted squash and tomatillos this morning. I doubt the plants will stay alive for long. I had been waiting for the fruits to ripen a bit more before collecting seeds for next year, because the squash still look kinda green, and most of the tomatillos haven't quite filled out their husks yet. Can I still get viable seed from any of these, or am I gonna have to start over again (and probably risk planting earlier) next year?

It's worth a try Josh I would think. Many fruit seem to carry on ripening off the vine, so it might be worth removing some of the fruit before they get damaged and putting them somewhere frost free to ripen off a bit more. The seeds may carry on developing a bit.