There's 2 visual motor activities on Your Therapy Source web site that I like using a paper towel tube. One uses a towel tube such as this with an opening that shows a a bead inside. The child has to control the tube, keeping it level in order to see the bead through the opening. This is great for bilateral hand use, motor control and visual fixation.
I have done an activity similar to this one using a clear plastic tube. I drew two lines near the center and asked the child to keep the bead or superball inside the lines by balancing the tube- first while stationary, then while walking.
Barbara Smith, M.S., OTR/L author of, The Recycling Occupational TherapistRecyclingOT.com