Bought some disposable paper cups this week. Apparently there is a standard size for paper cups in Korea, and you can mix and match cup brands and dispenser brands. We chose to buy the "Clean Paper Cup" brand from Homever (as opposed to the "Dirty Paper Cup" brand):
Here are the cups in the special one-handed dispenser, magnetically mounted to the side of the microwave oven:
You press the yellow button, and a cup drops into the holder below, from where you slide it out. At first, we thought it was going to drop on the floor, but it is a clever design and can be operated with only one hand.