I don't know what "dikes" means in this context
This plus more pliers, a couple of pry bars, hose clamps of various sizes, spare fuses, 14g and 12g wire, about a hundred 12" zipties and both brass and steel wire is pretty much what lives on my boat. Oh, also some sandpaper of various types, mostly for cleaning up electrical contacts if necessary. There's other stuff in my repair bag but unless you're afraid you'll drive into a log and then prevent your truck from sinking, I think that's almost everything that applies.
Well, I guess maybe this might still apply: I keep a tarp with lines already run off the eyelets on hand. For me it's an emergency hole patch which at first I thought would only apply to water travel but it suddenly occurs to me that if you live in stormsville you could absolutely find yourself suddenly needing to cover a surprise opening, say an in-laws' skylight, and having lines already tied on would probably speed up the process of covering a debris-smashed picture window or whatever.
Anyway I will say that on a semi-regular basis I'm in conditions that would be extremely dangerous (like radio for immediate rescue and pray for sufficiently timely response dangerous) if I couldn't keep at least one engine running and if I'm down to my backup motor it would still be...wildly unpleasant. And I've spent a lot of time working on all the mechanical systems on my boat, which are a mix of Ford and Volvo Penta from about 1980, and current Mercury stuff. But so far I haven't run into any realistic surprise issues which can't be handled with the above tools.