Too bad they stopped making the little boxes with perforations so that you could simply split open the box and pour your milk into it . . . not needing a bowl. Clean the spoon with your tongue, wipe it on your shirt - and pop it back in the drawer. No mess, no fuss - except that it required you to get up and cross the room to the garbage can and throw the box away.
Might be too much effort for a Millennial.
I think they still have those. We got them for camping, and it hasn’t been that ling.