Since I'm building a dollhouse for my niece, I discovered that if I wanted to stay organized with all the different sub assemblies, I needed to come up with a way to stay sorted and yet have each project easily accessible.

I wanted to mod some of the assemblies to improve on what was provided in the kit.
For example, the dowels that came for the porch are just soft-wood dowels - So I wanted to carve them into proper rails - and the window themselves had so many parts I didn't know from one minute to the next if I had them all there.

In comes my idea for a storage and organizational rack.

I've dedicated one shelf from an old Inbox/Outbox paperwork holder to each sub-assembly.
When I want to work on a particular part, I simply grab the appropriate shelf - take it to my workshop (aka my living room) and return it en masse once done.  All the parts are together and 'file' away like gangbusters in the utility room when done

This would work too for other crafts like scrapbooking or polymer clays.

I'm going to keep this after the house is done since I make other miniatures (the ones that go in the house) and that makes me bounce across a number of specialties. 
Anyways, I love jumping from one craft to another - so my kitchen table won't always be covered with supplies!