Huge 1L Fat Cat Mug/Bowl.
Actually, I uploaded this at 2am before checking the volume. It seamed really expencive, so I checked it tomorrow. Some crazy coffe lovers said they didn't mind the size, so I left it in store.
This material is watertight, not dishwasher safe, is recyclable, and is food safe. It is heatproof to 500C/932F degrees. Higher temperatures may significantly change material properties.