If you're freelancing, and fly for other companies too, (this doesn't work if you work for one company on a freelance basis) you can claim for uniform, medical, petrol, sunglasses. I paid my brothers accountant R250 and he got me 2 cheques back from the taxman totaling R7500 over a 24 month period. And all above board too.
I forget the details, it's easy to find, but you can get paid in full and then sort your tax out without the company getting into trouble with the taxman.