It really depends on what kind of bikes you have and how many. My husband and I have over 6 bikes. We are fortunate to have a lot of extra space. We found that the hook that screws into the wall works the best and we can line them up next to each other. (the hooks only cost 2.00-3.00) an can be found at any hardware store. You can also hang them from the ceiling in your garage with the same hooks... we have done that in the past.

You can also buy a rack that goes against the wall and you can hang multiple bikes on it.