Even though city dwellers tend to stack their possessions upward, some may still prefer to spread their bikes in a slightly wider fashion, while still keeping a few wheels off the ground. The Racor Solo Vertical Bike Rack B-1R lets cyclists hang two rides vertically by the front wheel with some space between them.
There is also a handy shelf atop the rack where you can keep your helmet and gloves. The solid steel rack comes with a lifetime warranty, and unlike a handful of other storage products, it requires absolutely no assembly. The price tag is in the $25 range.