I found a set of “nets” for icosahedron models of planets and moons recently and made one each of Jupiter with my daughter. They’re quite tricky to make the final joins on — you really need delicate slim fingers, not short dumpy ones such as I am gifted with. Anyhow, here’s how mine turned out:
I downloaded the net as a PDF file from here, but found other paper models here and here. As yet we’ve not tried the last two.