A rubber hose may get you by to use the car but ideally a new cooler would be preferable.
If my info is correct the part you need is available from Amayama in Japan, they will ship direct worldwide without going through the dealer network.
Usually I get parts within a week or so from them, the part you require is $78 but you will need to budget for shipping and some clearing/ import taxes etc.
Ordering direct from Japan is nearly always cheaper than from Toyota even with the extra costs.