Supposedly at all Aikido dojos it is tradition to hang up a picture of Ueshiba Osensei. I did not really do this, I hung a picture of Tomiki Sensei. One of my students, Scooter Holiday put one up though, and I have grown fond of it, especially the more scholarly I am becoming in the art.
Here is the picture up at KyuRyu AikiBudo dojo
I like the thoughtful, studious energy of this photograph. It represents my vision of Aiki well.