With many kids, we go through tons of cups per day. So much so that the majority of the dishwasher was cups / glasses - even the bottom rack! I first remember hearing some ideas toward this problem at a Smart Martha seminar, but more recently I went to a friend's home and she had this on her kitchen counter:
I loved this idea, and more importantly my friend said that it works out so well for them!
I will tell you that this system is working beautifully. They're still getting used to it [one child in particular can't seem to rmbr], but mostly it's been great!
I came up with the template on Word - the kids got to choose their color and the type of font [b/c we all know it's all about the FONT!]. Well, Charlie had no choice on the font but he's not complaining ;) I printed it on photo paper for more vivid colors and then laminated it.
It stays on the counter right below the cups and next to the fridge. So from breakfast to dinner, that is the cup they use all day. It's somewhat prolonging the dishwasher run-time. And that works for me ;)