I designed a ceiling mount for my bush cutter, but I think you can use it for a bicycle and other long small devices too, if you use a stronger filament type. I use PLA which works fine for my use-case.
To start this design project I don't want to re-invent the wheel so I use the Prusa pulley (73671). In the ceiling mount you can use the wheel and shaft which are part of 73671 (3x) and the object ‘PCBCF Prusa Pulley_ALL PARTS.3mf’ 2x. To make life easy for me I use the same ceiling mount for both parts, but replace the wheel/shaft with an screw only to hold the fixed end of the rope with the eye splice.
To get a stronger object I print it upright and add a massive infill every 20 layers.
The author remixed this model.