MMM - I'm thinking bare bones. Not that you are. Maybe you are, maybe you are not. But you seem to be somewhat focused on not getting stranded 500 miles from home. I can respect that. In case your trip is real soon and you don't have time to do a full body-off-frame restoration, my bare bones should suffice. In my opinion, to cover 90% - 95% of what's going to secure your trip, I think the list is quite short.
Tires, battery, oil & filter. Check, top-off, replace as necessary. I will add that carrying the clutch cable is also a great idea. But likely all the other crap is not going to be an issue for a 500 mile / 1000 mile round trip. All the other crap is just good common sense to achieve the longest life possible, with minimal down time for your car. Now if your trip includes 100 laps around Road Atlanta trying to achieve a new record for Mirages, you'll want to do more.
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View my fuel log 2020 Mirage ES 1.2 manual: 42.4 mpg (US) ... 18.0 km/L ... 5.5 L/100 km ... 50.9 mpg (Imp)