New ones from VW, pricey but correct fit. The oil pipe is expensive, but most hose places can make you a flexi one up that will be OK, just make sure the screw ends are the correct thread. People reckon around £20 for one, so that gives you a ball-park figure.
Second-hand air hoses (the one you want from airbox is plastic and moulded, for S/H try Syncrospares) then there is a rubber moulding that connects between that hose and the turbo. This part is around £30 from VW dealer and is a specialised moulding. I would buy a new one from VW if I was you, as second/hand ones will all be 20 years old, and the rubber goes brittle at the turbo inlet side. The rubber then splits, breaks up and the broken bits go through the turbo impellor and wreck it, costing you a new/rebuilt turbo at £400 I know