I ran into an interesting situation regarding those job buckets at Home Depot. I have been re-engineering the way I do dust separation/collection from my equipment.
I want the vacuum motor directly coupled to the orange bucket instead of how the first picture demonstrates. Previously, the shop vac attached to one port and the tool attached to another. The inefficiencies arose quickly because of the additional hose needed to connect them together. If I stack the shop vac on top of the separator and dust bin, I increase the suction and get more efficient particulate collection (see second picture).
The last two pictures depict the old and new lids, respectively. The grooved, old lid nestles the bucket bottom into an airtight connection whereas the new lid does not. For my application the new lid is nearly worthless!