Comment by Kuyawa

I've always used this aprox dimensions:

  Sun diam   1,400,000 km
  Eth diam      13,000 km
  Sun dist 150,000,000 km
  Mon diam       3,500 km
  Mon dist     300,000 km

Lets divide it all by 1M. So if the sun is 1.4m in diameter, it would be located 150m from earth which would be 13mm in diameter and the moon would be 3.5mm located 0.3m from earth

Simply put, imagine a yellow beach ball the size of a washing machine located a block and a half away from your house, a blue marble being the earth on one side of your keyboard and a peanut being the moon on the other side