Loooong time lurker, first time poster; been trying to implement what I've learned so far before asking any more questions.... Did a search here and didn't find much on battery jumper/boosters. Anyone use them? Are they worth it (seen prices between $40 and almost $200)? Brands/features to look for or avoid (lights, tire pumps, etc...), amps, etc...? If I get one, it would be for an aging '87 F150 and a 2000 Caravan.

My personal 'equipped to survive' story:
DW was unimpressed with my efforts until last year. 2yo lost his breakfast and lunch down her shirt as our flight touched down - unbeknownst to her I had a small towel, a complete change of clothes for both and a trash bag for the dirties in my backpack (purged down to ca. 20lb of TSA safe schtuff - gotta work on that). More of a diaper bag on steroids, urban/first aid/kid oriented, lacking only shelter and enough H20 for a weekend in the woods. She doesn't mention my 'paranoia' anymore...