This is something I am trying out to see if it can work.
I want a quad cannon to go with my defense line and have been using the square obelisk up till now.
I thought it might be cool to have a big crystal on the top to represent some sort of firing mechanism.
Of course I will have to see what this looks like painted up as the "crystal" is cardboard and will have to be painted rather sneakily to look like crystal but still... the idea is there and I think it is a worthwhile "counts as".