First, I decided Annika needed to learn to drink from glass cups. The VERY FIRST time she drank from one, she dropped it on the floor & broke it. And I was right there, and it was only 2 feet off the floor onto wood flooring. This happened last week.
Now I decided to start teaching Saben to clear the table. The VERY FIRST time he takes a bowl to the kitchen, he drops it & breaks it. This is today.
For the record, they have both drank from glass & cleared the table periodically, it was just when I decided it was time to make it a permanent habit that they managed to break things.