Re: Small, flat floatant paste
I'm not sure that I've seen the type you mentioned, but I have heard(on this site I believe)that you can use 'Chapstick' for floatant if your in a pinch, and that would fit in your box.
**Wait a minute, I just reread your post and I misunderstood what you were asking, I thought you meant small round containers such as those that Chapstick come in.
Anyway, I think 'Gink' floatant comes in a round container in a paste formulation, along with a squeeze type bottle.
*Comments posted above are only my opinion. I may be right....eh, I'm probably wrong. Take 'em for what they're worth.*