Most useful behaviors for AR4?

I'm building the AR4 with my friend in Austin Texas and I was curious if anyone had ideas for practically useful behaviors we could have it do with computer vision? I was thinking of using it to change diapers safely, scoop a watermelon, cook some steak and broccoli if it's beside the ingredients and stove, make a protein smoothie if u put it beside a blender, etc...

~ Q

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