Personalized Cup Recs

My kids are driving me insane with only using cups once. My dishwasher can't handle it. I tried buying cheap styrofoam cups but they ran out in like 3 days - that's not sustainable.

I'm looking for an unbreakable cup that I can personalize with their names so they can tell them apart. Insulated would be great. Dishwasher safe is a must. The personalization cannot fade.

Are my only options an engraved steel tumbler?