Kmw864

I've been driving my dads 1996 Lexus sc300 for a few weeks. It is a manual transmission which I understand is rare. Anyway, I have lost the only key he had for the car. Can anyone give me any advice on the best/ cheapest/ quickest way to get another key made? I would like to avoid having the car towed somewhere if that's possible. Thank you very much. I don't need a remote and the key I lost was just a plain key- it didn't have any kind of special parts in it.