Anonymous
If you use a little bit of Oasis or florists foam you can put that in any container, small or large, and wet it. Push the stalks of the flowers into the wet foam. If the container gets tipped to one side it won't matter as there will be no spills. Just make sure to keep the foam damp.
?
As mentioned above, some sort of foam or sponge that will block the water from gushing out I think would be best.