I found this on Pinterest and I think it's got a pretty good range of "classics". Of course you can always use more than one of most of these items, but it's a good place to start.
The only thing I might change is maybe one good pair of regular (bootcut jeans) and two pair of skinny, and a super skinny pair and also tan ballet flats and tan riding boots. A good tan can go with black and brown.
Original Link - Let The Real World Begin Blog