My MIL has been on Oxygen 24/7 for the last 10 years. She has enough tubing to reach from her second story window to the outdoor pool! (She still loves to swim--head ABOVE water)
She keeps her tubing fairly long. She uses the cord ties for appliances/electronics to tie up the extra length.
She also uses a wooden wine rack to store her extra/empty cannisters.
HTH.