I like the safe-trick-or-treating idea. I think that this could be further implemented into a normal residential security app, or a feature that is used by a housing site like Zillow. As for the ticket-selling app, a cool possible addition to this may be to create a listing of people buying and selling tickets, with each person showing a profile of locations that they are comfortable meeting up with. If you both have any overlapping areas that you are willing to meet up, you two can plan/chat with each other on a place to meet up.
I like the safe-trick-or-treating idea. I think that this could be further implemented into a normal residential security app, or a feature that is used by a housing site like Zillow. As for the ticket-selling app, a cool possible addition to this may be to create a listing of people buying and selling tickets, with each person showing a profile of locations that they are comfortable meeting up with. If you both have any overlapping areas that you are willing to meet up, you two can plan/chat with each other on a place to meet up.