Been Boo'd from Beth Silaika is such a clever stamp set! I learned about this fun Halloween tradition when we lived in a subdivision in Pittsburgh; it's basically a round of ding-dong-ditch with a twist - there are goodies waiting for you at the door! My kids loved this! This stamp set from Papertrey Ink lets you create a great package in no time flat! And the best part (in my mind, at least!) is that the poem is already in stamp form.
PTI's Coffee Bags make a great bag to decorate and leave your goodies in, too. You can easily fit several fun snacks in them - and their surface is ready for ink, so your Boo'd package will be the envy of the neighborhood! (I even stamped the ribbon for a fun touch.)
I hope this gives you some fun ideas for what you can do with your neighborhood or even your co-workers! Be well.