We already had a plan in place for drinking glasses. With as many kids as I have, the amount of cups left unclaimed on the counter can be headache. And since no one knows whose cup is whose, they grab a new one from the cabinet. So we put name tags on the counter with each persons name.
Each person gets a fresh cup at the start of the day. After each use they are to put their cup by their name and that's where it is to be kept, reusing the same cup throughout the entire day. This has been a great help in cutting back on our cup usage and keeping the cups in order. Only every once in a while do I have to reprimand one of them for not following the rule, usually they're good about it.
For the dishes I labeled some old plates and bowls with their names so that there is no confusion on which plate belongs to who and so forth. The dishes for the time being can be kept on the drying rack until needed and returned to it after being washed. Nothing fancy for this trial run. If the system works out, then I will purchase some new color coded dish sets for each girl and rearrange my dish cabinet to have a permanent place for them. But until I know it's worth the effort, this is good enough.
Hopefully, this solves our dish problem. . . and our dishwasher gets a much deserved rest!