I made this mini scale suspeion model for practice and showing skills in assemblies, in context model is something like 16 cm tall, so if 3D printed could serve as a desktop model. The bearings and screws are from Mcmaster Carr, everything else I designed springs paramete are in context of the assembly, if you drag the arms to different positio and then hit CRTL+B, the model will rebuild with the spring adjusted to the new length.