I use plastic disposable syringes with the coarsest needle I can get, to measure my colour concentrates. It may raise an eyebrow or two when you ask for them but when it explained what they are for I have never had a problem.

Brown storage bottles are available from pharmacies (in UK at any rate) 100Mil 250mil and 500mil. I buy my Ilford multigrade developer in 5 litre containers for the price of just over the cost of 2 x 1 litre bottles. I decant it out into 9 x 500mil bottles and the remainder is decanted out into 100 mil bottles. 100 mil is enough for an evenings darkroom work. There are good cheap ways of cutting the overheads when using a darkroom.

Now lets see how do I cut the cost of heating, lighting, film, beer,...........