I bought a couple of measuring grads off ebay - 50ml and 500ml iirc, just for measuring out the chem's. Once measured out I decant them into cheap poly. measuring jugs from asda - 50p each. These sit in the sink of warm water awaiting their moment of glory.
I use Ilfostop 1+19, which has a solution life of 7 days at working strength. It has an indicator dye in it which changes from yellow to purple as the stop gets exhausted. To be honest, I seldom process more than a couple of films per week, so I don't often hit this stage.
As for fix, again I'm using ilford rapid fix, 1+4. My tank takes 300ml of solution to do 35mm films. I tend to mix up 500ml of the fix, and keep it in a sealed bottle. When I'm going to do some processing, I'll decant 300ml into one of my measuring jugs. For it's first use I'll run the fix for 5 minutes, then pour back into the 500ml stock bottle. Next time I'll give it 6 minutes, third time maybe 8, 4th time give it 10 and at the end of the 4th repeat i'll dispose of the stock, and re-mix a new batch next film.
It may not be necessarily the most economic way of working, but as I don't process films particularly regularly it's not horrendously expensive, and at least I know that my chem's are relatively current.