This cup holds 180ml or 1 Japanese gō or 150g of short-grain rice. I lost the cup which came with my rice cooker, so I decided to make one myself.

Doesn't need any supports, easy to print, a bit ugly but functional. I used PLA and it worked just fine.

Don't measure wet food because it's difficult to clean 3D-printed parts and leftover food encourages bacteria growth. Also, the bottom will be hollow and water will be trapped inside unless printed with 100% infill.