Firmly believing that you are never too old to party for All Saints, we came up with a creative way to allow him to participate without feeling like he was wearing a costume. We thought about the symbols for the three mighty Archangels and came up with this design for a cool T-shirt:
|St. Michael's flaming sword, St. Gabriel's horn and a fish for St. Raphael (resembling an Ichthys for a little extra symbolism)|
Anyway, I just thought I'd share in case you have a shy, big kid who wants to participate in your All Saints Party but just doesn't want to dress up.
Edited to Add:
Here is a website where you can find some symbols associated with saints.