As a contractor, you'll be able to claim most things............... Car/ bike, fuel, cloths, phone, computer, stationary and the list goes on.
This type of situation seems like a short term job, so make the most of it whilst you are there
Employers like this need to reduce their costs, as they are always having employees come and go. If they paid properly, it would more than likely work out better for everyone
As mentioned above, make sure you are covered by their insurance and you may need to sign something to that effect.
There is always a Silver Lining and it is there for anyone that chooses to look for it!
All the best and hope a better opportunity comes along soon