A tiny "add on" kit, that scales the gas giants according to a 300mm "Sun". This allows one make DIY scale representations if only he finds a something like to a styrofoam ball at the right size.
An alternative version of this kit is available
here, that includes Saturn as a bifurcated globe for the possible future easy addition of rings.
Set includes:
Jupiter: 30.1 mm
Saturn: 25.1 mm
Uranus: 10.9 mm
Neptune: 10.6 mm
The terrestial planets are unfortunatly unprintable in this scale, however if you are interested in putting them together some other way the sizes of them would be:
Mercury: 1.05 mm
Venus: 2.60 mm
Earth: 2.74 mm
Mars: 1.46 mm
Pluto: 0.51 mm