Bike storage: bar swivel to turn sideways?

[DCBassman]

Does anyone know of such a device? I've come across a couple of historical devices, but can't find anything current. Would make life so much easier. Already have folding pedals, which helps.
Any insights gratefully received!
Ta.

 

[Sharky]

Never knew they existed, but you can get folding handlebars!

Does this help?