Well, the thing is that since one year or more I'm trying to find a non toxic compound that can be done mixing water with "something", I need that the result of that has "like gum" properties, or a high density foam (like a hard mattress). I don't know much about chemistry but I think there must be something out there. This is for filling bags for special kids, we usually work with ballons but we need something more heavy, and if we can mix and get that kind of material it would be great. I have a friend that works also for the foundation and can help us. Thanks a lot to anybody that can help us.