Sputnik 1 (Russian: Спутник I, meaning “Companion” or “Satellite”) is the Earth's first artificial satellite. This Soviet spacecraft, the first in the Sputnik satellite series, was launched on October 4, 1957 from the Baikonur Cosmodrome.

Here you'll find a detailed 1/12 scale model of the satellite, including all its interior parts.

This model is printable with 2 types of printer: FDM and resin.
You'll need to add 4 magnets (diameter 5 mm, thickness 1 mm) and 4 piano strings (diameter 0.5 mm, length approx. 45 cm).

link to assembly instructions