That is exactly what is done up here in Maine! It;s too cold and homes are too far apart and even snow on the ground already on some years.... plus bitter wind!What kind of goodies to you distribute? I'd go for some nice, chewy, gooey candies. I used to love popcorn balls but they frown on home made things nowadays. Up here, it's usually so cold by Halloween that the local retailers put together and sponsor indoor "Trick-o-Treat" parties.
Decorating yards is tricky, too, because it might just snow. My daughter would love your spreads, though. She usually goes all out for Halloween.
We have a mall about 35 miles from here that puts on an event for the kids, plus local businesses do too!
In my local area, the mom and pop movie theater one town over, puts on a Halloween party.... and there is a left over huge military fort from yesteryear that gets turned in to a haunted house not too far away that kids come from a 50 mile radius to visit!
Mainers really love their holidays up here! They decorate their homes for all of them! Halloween, T-Day, Christmas etc makes winter fun for their kids,,,,