I am starting to think it's wise to have an 'emergency travel' capsule at the ready. Two summers ago, I rushed back home because my Mom had suffered a heart attack (she's just fine) - and I'd just gotten home from a business trip, so I was already mostly packed, just needed to run some laundry and get on the next plane. All the non-clothing items were packed, and I just didn't bother unpacking them. Things like toothpaste, shampoo, deodorant, makeup, hand sanitizer, band-aids, Advil and so on. You know, the normal "stuff" you take on a trip (other than clothes).
Seems it's happening again (no heart problem, but maybe something else). This time, I am *not* coming home from a business trip and turning around and leaving again. So I'm rather unprepared. I have a bunch of stuff that needs ironing and/or dry-cleaning. Nothing tucked away in a suitcase in terms of the usual toiletries and so on. I don't know that I will need to travel at all, but it's at the back of my mind, and this time - I am not prepared, which is unusual for me.
I've traveled so much that I used to just keep half my suitcase packed with those kinds of things. Haven't traveled quite as much this year, so have slacked off on this. I've gotten kind of "comfy" in terms of not having everything at the ready (pressed/dry-cleaned and so on). Lazy, I guess you could call it.
Thing is - it really helps to be ready to go at a moment's notice.
So in terms of this thread - I'd recommend a carry-on bag or small suitcase already packed with everything but the clothing. I'd also recommend keeping on top of laundry, ironing and dry-cleaning/mending so as not to end up caught in a bit of a jam.
Keep a spare set of inexpensive basics for your suitcase - Ponds cold cream, basic skin cleanser, eye makeup remover, spare pair or two of contact lenses, trial size contact lens solution, deodorant, shampoo, conditioner, sunscreen and so on. Get the drugstore stuff and it won't be too expensive to keep a second set of stuff packed in the suitcase or at least packed in a cosmetic bag that you can just grab and go. Keep on top of the laundry, ironing, dry-cleaning and mending so that if need be - you can just fling stuff from your closet into your suitcase.
As an "Emergency Event Outfit" - I recommend being ready to travel at a moment's notice - and that means keeping spares of toiletries ready to go, and keeping on top of wardrobe maintenance chores so that if you have to leave and go somewhere suddenly (with no time to plan or come up with a nice trip capsule), you'll still be in good shape.