I have a set of lines and handle for every airplane that I have hanging in my garage that is ready to fly. I mark on the bottom and on the line reel the airplane that it is for, then mark up a heavy plastic bag with the same information, and keep them in a large tool bag I got from Harbor Freight. I have a separate suit case type pf tool box I got from Harbor freight in which I keep raw line sets, extra handles, tools for making up lines, etc. I would suggest the same thing. Look for old suit cases or large brief cases used at Goodwill, Craig's List, etc. to re-purpose for what you need them for. I did the same thing for a prop box to hold spare prop selections. I like to be able to stack these for storage or transport. I have another smaller tool bag (sometimes called a rigger's bag) that I keep my starter, small boxes with stop watches and tachs, glow plug leads and fuel syringes in. My starter box is a small, hand made wooden affair that hold a 12v battery and power panel, and just a few items and tools that may be needed at the flying circle. When I go flying, I keep all this stuff the same and stacked at the ready, so when the urge/need to go flying hits, I just start grabbing boxes and bags and I know right away that I have everything.
HAPPY EASTER!
Dan McEntee