I wonder if just plain old sand will work.... Lots of little tikes stuff like their little basketball hoops requires sand to keep it standing. Oh man, I want that giant Ultra-7 too!
The original blue kanegons had foam inside them. Maybe not the original runs. If I remember correctly yours was from a show in NJ, so it may not have it due to the fact it was only brought for display. I have known people to take some of pieces off and ship them that way. They take a lot of time and patience to get back together and the inner foam only gets in the way. I know they had trouble finding a foam supplier after the initial one disappeared. I know the initial run of the figures were very slow, so if you decide to order one do not expect it to show up right away. M1 is a small company and it takes a lot of time to build these. I think some people had to wait over a year to get it. I think mine cost around 500-700 for shipping. The figure is worth all the hassle, wait and cost.
So if we are buying the GID, it will come in an assemblED one ? And we don't need to stuff those stuff inside ? Just worry, we will receive them in parts and we have to fool around to look up suitable materials to fit in.
I hate to say it, but unless you get absolute clarification from Masato on this, I would be prepared to 1) trim the parts, 2) fill the parts, 3) assemble the thing yourself, and most importantly 4) wait several months or more to get it. It sucks, but then again, think of how many of those Kanegons reside in the Western Hemisphere. Not many.
From what I understood, you can purchase a Kanegon at a reduced price unfinished, or pay more for a finished piece.
It's going to be interesting. That's for sure. What's funny is, there are much smaller toys, going for way more!