How do you protect new paint during restoration?

The 1971 Duster is coming back from body shop with new paint later this week and will need good protection during the (probably very) long rebuild process.

What is the best way to keep it safe in the garage? Towels? Moving blankets? Some kind of plastic wrap?

I have a really good cover but the inside is not really that clean after years of being outdoors, tire rubber on quarters, etc.

Thanks in advance!