I'm not really a big fan of Halloween, however the village organised a Halloween walk. Rather than knocking on doors doing trick or treat, children could go round the village with their parents and when they spotted some decorations their parents could give them some sweets.
I wanted to join in a little, so painted myself a pumpkin and some squashes to stick in our window. Not as impressive as some of the displays, but with a low enviromental impact and still fun.