I designed these with specific requirements in mind:

• Must be stackable
  • Would be great if they are tightly stackable, for transport
• Must have pour spout
• Must be durable to throw in game bag
  • Thus, the decently thick walls
• Must work with TPU
  • So everything is rounded off
• Must look good

I feel like I achieved all of these goals. This is only the second thing I have ever printed in TPU, and I chose TPU because of the durability. I would recommend this, as it also makes them dampen the sounds of pieces going in/out.

A stack of 8 of these sits at just under 3 inches (7.5 cm) tall. With the Bambu TPU I used, each bowl weighs about 1.1 ounces (33 grams). 

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I have added a thinner walls version, in case people want to use less filament, but reducing strength. Note that I have not printed the thinner wall version.

With the same print settings: Bambu Slicer claims the original would take 38g vs the thinner wall taking 30g of filament for one bowl.