Originally Posted by
derath
I've had a polecat bike/ski storage rack for about forever. I got it when in college to hold my bikes and skis in the corner of my dormroom. It now is in the garage to hold 2 of our bikes and both pairs of skis in a small space.
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This rack also doesn't put anything permanent on the walls ceiling or floor. It works by pushing against the floor and ceiling to hold it in place.
The above is probably the best idea.
If you have hard ceilings, you've probably seen this one (below); very popular: