I always buy a few Mickey shaped soaps from the "Disney At Home" store in DVMP - I bought some gorgeous strawberry scented ones in December, and I always come away with other (more expensive!)purchases from that store (towels, candles etc.)
CDs are usually a regular purchase for me although I didn't buy one on the last visit.
I've also started to buy a Christmas Tree decoration every visit now.
Another store which had must buys for me was the Gourmet Pantry - which was sadly closed on our last visit in December.
Disney Village Marketplace stores are a MUST when we visit - I love it there!
....... ooh I must add that when we visited IOA in December, they had some wonderful Christmas things in the Port Of Entry Christmas Shoppe - bought some great Christmas Tree decs in there!