The most practical way people choose is a drawer system and building it yourself is the cheapest and easyest way to do it ... what you put in the drawers is up to you. There are tons of drawer system build on this forum and even if they are not your vehicle specific they apply the same way... just different mesurments. The way you organize the drawers really comes to what fits your needs. If you do hardcore wheeling then your recovery kit should be easy to access, not deep down buried under the kids toys. If you are looking for great organizing bags i would suggest blueridgeoverlandgear.com . They have great recovery, first aid, tool rolls and bags that just make life easyer in the rig.
Hope this helps
