Bike Storage: Wall mounts, stands, lock-ups, sheds, etc.

Is there a hallway bike stand which doesn't require mounting the ends to the floor or ceiling?

Yes, these Amazon.com: gearup Lean Machine Gravity Rack, Red/Black: Sports & Outdoors

Halfrauds do a couple but they have wiiiiiiiide bases for stability so I hope you've got a lot of hallway space.

And yes.

I have two of these in my flat doing nothing if you're interested.