With the empennage kit, I laid out the parts generally on a sheet of plywood sitting atop a pair of sawhorses. I learned from that... With the fuselage kit, I bought three sets of plastic shelving units from Menards or Lowes and stuck a label on each shelf: 140, 141, 142, and on up. Then I put all the F-0140_ parts on the 140 shelf, etc. There are some non ?F? parts and some parts from other it?s like the RV-12 or RV-10, and the big skins and other bulky parts went on my improvised plywood table. This has worked well. The empennage kit has different part categories (E, R, VS, HS, and F being the main groups) but you can still find a good way to organize it. I find that having the parts organized by part number makes finding them very quick, compared to ever having to look up which subkit a part was in.
I got a set of little bins for rivets and two tackle boxes for AN3 and AN4 hardware. There are a few parts bags sitting on one of my shelves, so I do occasionally have to pull out the kit inventory list to figure out which bag number an AN6 bolt, nut plate, or uncommon rivet is hiding in. But mostly I spend far less time finding parts than I did with the empennage kit.