Model of a copper bathtub I built as a prop for a stage play. Used the model to create my construction drawings for the real thing. Model is available with and without the handles on the sides.
The built prop was 5' long and 2' wide at it's base, flaring wider towards the top 6" on all sides. The base is layers of MDF to create the moulding, with a plywood bottom for the actors to sit on. The sides were 1/2" plywood, cut into staves to create the curve, as one would make a barrel. The outside was then skinned with 1/4" flexi ply and Luan. Moulding around the top, and fillet around the base were made using foam pipe insulation.
Can be scaled down, but it'd need a small diameter nozzle for a really small print.
EDIT: Added a thicker walled version for small scale printing