I hate when parents only yell at their kids for what they do wrong. I discourage yelling in our home. Kids listen better to talking it out. Praising them for what they do well is just as important. I can't image how some kids home lives can be.
This at least has some good play ideas. What's the policy in your house? A leading psychologist says no TV for under threes. easy, fun and mess-free alternatives here, because you can't be hands on all the time, can you?