We've started using a 90 second time out with Jackson occasionally. There are mainly a few things that will earn him a spot in time out. One of them is when he tries to climb on the coffee table. Today I walked in and he was lying on the coffee table. He went to time out for 90 seconds and hated almost every second of it.
A few minutes later he went back up to the table, looked at me, and lifted one leg. I said, "Jackson, feet on the floor or it's back to time out."
The little guy walked over to time out and sat down there until we convinced him that it was "all done" and he could come out. Rob and I had to turn our backs and laugh because it was the cutest thing. If only time out would stay this easy.