That's like, absolutely adorable??? I've never done much for Halloween, even when I was younger, because none of my friends wanted to go trick-or-treating with me or we just didn't live in the same neighborhood for it (so I went with my parents lol, and once I was too old for it I just stopped). And I can't sew for sh*t, or carve at all (it always ends up ugly af), and crafts are a nightmare when I do it, but I know that if someone invited me to something like that I'd be there in a flash, just for the experience. :'D
Either way, I really hope that you keep doing what you're doing, once the situation allows for it, because these all sound like they'd made for an amazing experience. :'D
(Especially the costume and handing out treasure part, you're probably the highlight of their night.
)