If you can make a psi ball, usually the next step is to create different shapes. Make the ball into a pyramid, or into a rectangle.
Once you have basic shapes down, you can try to be more complex with it. Use your imagination. Adding temperature or texture is also an approperiate step after that.
Finally you can start placing more complex programs into the psiball. Like shelling it so it stays together when its seperate from you. Or making it feel viscous and gooey if you throw it. Lots of options.