We have three bicycles and limited space to store them. The gold man's road bike and the blue lady's city bike are both hung from a folding wall hanger from Lowe's. When I went to get another for the black man's road bike, they had a replacement I thought unsuitable. So, I decided to make my own hanger. It does not fold, but I never folded up those I bought earlier, either.
Two pieces of 1/2 inch concrete reinforcement bar 12 inches long
Steel rod 1/4 inch in diameter
Two lag bolts 3 inches long each
A welder (I used a flux core wire feed welder. I also heated rod for bending with a 230 volt welder and a carbon arc torch, but this could be bent with a good vise and hammer, too.)
An angle head grinder with a cut-off wheel
Measuring tape or rule
Wrench for driving the lag bolts
The photo shows the end of the steel fence post. Notice the raised portion for hooking the fence wire to the post. I removed the rise and converted it to a hole for one of the lag screws. See the next step.