What would be nice is some micro vessels like rowboats, longboats, barges and ferries that must be propelled using paddles or float down river. These would be smaller than ships, only holding a given number of passengers according to their type. Some types would not be sea worthy and larger micro vessels would need to keep land in sight at all times when at sea. Even smaller rafts and canoes could be carried with good effort. If ya really want to go super small micro mini then make us some floaties!