Any kind of activity you can engage in that brings you closer to your child is excellent when dealing with the Child of Trauma. Walking in the out of doors is always a good way to spend quiet contemplative time with a kid and allow you to talk or not talk as the case may be. It allows you to be present and often just being present is what a fostadopt child needs.
The average "normal" parent in the United States spends just 10 minutes of quality time with his or her child per day. The benefits of spending much more time than that builds trust, helps a child regulate, and brings parents and children closer to relationship.
Spend the time to love your children, it will make a world of difference in how they relate to you and to others.
In Metro Denver, you could go for a walk at the Botanic Gardens near Chatfield and just enjoy the lights, taking the opportunity to just "be".