For my cousin's wedding, my mom made little chocolate wedding favours. If you could find a mold for it, little chocolates with the character logos would probably be a cute idea.

I am beyond impressed and a bit jealous.
If you want to go subtle, you could do team colours for invites or decor
-red, orange, brown
-blue, cream, grey
Wait. Invites based off the Sandvich poster. Unf. Anyway

There are probably people you can commissions to do invites somewhere on this wide Internet. Someone else would probably have to speak up for that.

Just a note. I think this would be best in /dis/ if only for the fact more people might see this.

Have one side of the reception RED, the other BLU.

Break out into cosplay fight on the dance floor.

Guys. Guys.

Blood-spattered doves.

I would happily design and create the announcements and invitations for you, but as I live in the UK I have no idea how this would work. Here's a sample of my work, if you're still interested I've included my email so we can talk there

You are the best people ever. Fo real. These are all great. Also, how does one go about moving threads? I'm pretty newfag.