Pet Peeve - Check Mate!

You know the scenario. It's summer, the kids are playing around, inside, outside, all over the house. They run to the kitchen, grab a cup, fill it with icy cold water, take one little sip, set the cup down, and run off. The process is repeated all day long, each time a new cup. You're left with a dishwasher, counter, or sink full of "dirty" cups. And, your cups all look the same, so no one will claim any cup, or reuse it. One of my big pet peeves of summer time.
One year I bought cheap cups and wrote the kids names on them with a paint pen. Sounded good, but if their cup wasn't clean, they would still grab another one, and I'd end up frustrated.
This year, I have a new plan. My kids have those stretchy bracelets all over the house. Those thick ones with logos engraved in them. So... I collected one for each kid, flipped it inside out, and wrote their name on it. The band is small enough to fit on our small cups, but stretchy enough to fit on larger cups as well. So, now, before they fill a cup, they grab their band, slip it on, and the cup is theirs for the day. Problem solved!

Now each kid can claim their own cup for the day, even mom. And, if the band is left on the cup and it goes through the dishwasher, no biggie. It's washable!