LOL, I just taped up a box the other day for the Jeep. I'm mostly using a bag/pouch slung over my shoulder, with a set of clip-on pouches for oddball screws, wirenuts, etc and a larger one for bits that I don't use all the time. Other bits, blades and drivers are packed into the carrying cases of my cordless tools. Less often used tools are kept in bags or stowed in the Jeep in various spots. Once I'm in, I usually use pockets for tools and park the bag somewhere.
One thing I highly recommend for reducing weight is going with Wiha screwdrivers and Knipex dykes, linemans and cobra pliers. The weight difference in even a small set can be a few pounds and I've been incredibly impressed with quality. No more Kleins.
where did you purchase these tools at