I like this list of basics for women that can be worn many ways for many situations–the true definition of classics. While these are suggested for women in college, they are very useful for most women. They make a good travel wardrobe too.
The list: black blazer, dark skinny jeans, white tees, zip-up fleece jacket (I like black for this), riding boots with low heel, solid scarf, tote bag, pencil skirt, party shirt. She also suggests a rain coat and rain boots. I’m not sure they are totally needed, but it’s a personal choice. I prefer a compact collapsible umbrella. A rain coat that is a trench coat style could be very useful though. Again that would be most versatile in black, IMHO. A note about the tote bag. I like a bag big enough to use as an overnight bag or carry-on luggage if needed. And I like it to have a zipper to be more secure. You could even sew one if you want to.
Some changes for a travel wardrobe: change out the white t-shirts for some in darker colors to hide any stains/dirt picked up during a day out. I’d choose a wine color, a royal blue, and perhaps a black & gray print. A lightweight scarf in a print could come in handy to change the look of all the black. That could be a good substitute for the party top. For travel I’d skip the boots and substitute a good pair of walking shoes that are dressy enough to wear with a skirt. Again, in black. Don’t wear good jewelry when traveling. A simple pair of silver hoops works with everything.
I found this at ShoeStringMag.com. Even though it was written a few years ago, the pieces still work. That’s when you know you have classics! Try them with other things you already have in your wardrobe. These pieces will really multiply your options. They are truly investment pieces that you will wear over and over!