[Microbiology] Looking for an Unusual vessel

[FLHTPI]

I need an unusual shipping vessel.

I'd like to ship a small amount of lyophilized solid, and a small
amount of solution, in two separate small joined containers.  maybe
some kind of ampule.
 I need something where both sides will remain separate until a
customer bangs, or cracks, or breaks something, at which point the
solid and liquid will mix.

Any thoughts??

thanks in Advance