tried the hammer and condom toolkit - if the hammer doesn't work f### it, but there's always something you need that's back in the line in your big box.
I always carry a snap on ratchet screwdriver, mini maglite and leatherman and a barn box in the van that has most of the stuff you could ever need to fix a 146 (& that's a lot - even avionics)
I've tried many times to lighten the load of the box, but then one job comes along and the tools are in the line so I leave them in the box for a while, then another one comes along and before you know it the box is overflowing again.
At least the box has loads of compartments for sorting stuff, leaving the bottom for most of the A+C type stuff.