9 and 7 are old enough to learn how to pack. Give them the list as is, and let them get everything out, and then think with them whether there's anything they might need that's not there....

You may need to nudge them toward underwear, but they may think of things they "need" that aren't on the list either.

By the way, I was a scout mom. Pajamas and underwear are completely optional to most men and kids, in my experience.

Adinva 51, S20, S18
M24 total
6/15/11-12/1/12 From IDLY to H moving out
9/15/15-3/7/17 From negotiating SA to final D at age 50
5/8/17-now: New relationship with an old friend
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Happiness is a warm puppy.