Here's a simple dinner set and print-in-place forming tool to shape flat 3cm disks into 3D shapes. Drop the unformed plates into hot water then quickly and carefully place them into the forming tool and close it.
The plates are 0.6mm thick. Use 0.2mm layers for printing them The top and bottom layers can be concentric for a better look but make sure the middle layer is lines or rectilinear otherwise it'll break in the mould.
The author hasn't provided the model origin yet.