One thing that should be kept in mind about allowances:
nobody pushes you to find something that fits the allowance... the main reason why companies are using allowances is that compensations are based on the basic salaries, meaning that lowering basic and increasing allowances is good for companies and not that much for employees.
It doesn't mean so much to compare allowances to market prices since it's the full package that makes sense.
May I suggest to claim for toilet paper allowance, sunglasses allowance, still water allowance, Christmas log allowance etc...?