Oh! I for see a new screwdriver in my future! that 3/8 option would be way handy.
I have about three of the klines in my truck. All of them missing bits. The bits are way to small. If they come out they always roll under something you cant move or fish them out from under. Then I bought an Irwin. Love the 3/8 and the bits don't fall out so easy.
Hex bit ratchet. Handy to undo screws with less than 1" clearance.
Battery screwdriver. When there's 20 screws to undo... Also you may need one hand to be holding something while screwing/unscrewing. So much easier with a battery powered screwdriver, fits in your pocket unlike a battery drill/driver.
Torches, best is a headlamp LED torch on your head, both hands free.