First I was going to get a 130 litre bin from IKEA for the new syrian. But while I was at a midsummer party at a friends house - I spotted a empty Criceti 15 in his yard! It was actually his brothers cage that he had used for two rats. (This is not a suitable rat cage) and he was selling it! I got it cheaply for 300 crownes (£ 29.39)
After four hours of disinfecting it at his house, I brot it home! Now it's standing under Arrow's cage, looking incredibly big! The measurements are 80x50x40cm.