Before wisdom comes knowledge, so place those things you want to become expert at in this area. Hang your tennis racket here, a picture of your favorite athletic team, or some other reminder of the fun you have in the physical world. It's the acknowledgment of the broad context our lives need. This is the power corner, the farthest distance from the door. Visualizing goals helps actualize them.
Future is always positioned far away.
This is a good area for a storage compartment of some kind. If space doesn't permit that, hang a picture of your progeny, students, or the world. The accumulations of our whole lives are experienced by our descendants. What we wrought on this Earth is our legacy. By placing an object from nature on the table, we remind those who enter of the association we all have with each other and with Earth.