Have a look on the net for international schools in Qatar, Dubai, Bahrain and Abu Dhabi.
As for labouring / fitting - you may find it difficult to find a job there unless you have a particular skill - most of the labourers are from Asia and are very poorly paid.
It is near impossible for you to travel in as a couple to Saudi, only marrieds get visas and rights. Unless you take a TEFL (English as a foreign language) course and then apply for a place there.
Or try for somewhere in Europe, in Poland, Czech Rep., RUssia and Croatia they are looking for teachers and also you can pick up extra work on the side. As for saudi, it's tough to get in, almost as tough as getting out (but that was my mistake