I should of made one of these long ago. Anything that keeps me from emptying the DC bag every day gets my vote
I bought the container from a guy on CL for $20.00 (didn't smell like pickles or olives either) I think the fittings cost about $14.00 from Rockler.
When it gets about 3/4 full the DC starts to suck some chips into the bag so I know it's time to dump the barrel. Other than that almost no chips get into the bag
It's a lot easier to dump the barrel than to change the bag. The barrel is 30 gallon which is just about right for me. A bigger barrel would obviously hold more chips but would be to heavy and cumbersome for me to empty it.
This is about 70 bf of 4/4 ash. No muss no fuss