Gift Shopping...
Museums and art schools often have the best gift shops. I found a few below that I enjoyed and hope you will, too!
Located in Bloomfield Hills, MI, the The Store@Cranbrook Art Museum, features products designed by Cranbrook Academy Alumni or Artists in Residence (look for the (*) symbol while shopping), Carl Milles' sculptures, Eliel Saarinen's architecture, paper products, books, items for children, prints and clothing. All proceeds support the Cranbrook Art Museum. Cranbrook alumni include Ray and Charles Eames and Ruth Adler Schnee. The store also accepts international orders for those of you that aren't located here in the states. Pick up the Eames Poster Print 'Wire Chairs with Bird' or the 'Built NY Wine Tote' designed by alums John Swartz and Aaron Lown. The 'Shuey Postcard Collection' is great for framing and the 'bla bla Vegetable Rattle Set' will help keep the kiddies occupied (we hope) while you're cooking up dinner.
At the MFA store in Boston, look for Pantone dinnerware, French Fashion thank you notes, Mr. and Mrs. Clark and Percy magnents and glass from Boston area artist Josh Simpson. 
Then, there's the not-to-miss SCAD online with Working Class Concepts trivet trays, Pamela Wiley pillows, Irene McCollam ceramics, Tiffani Taylor's pottery (cute drawer pulls, pitcher and vase), along with fine art like this lovely mixed media painting on a wood panel by Carrie Christian and Woodie Webber. I *heart* SCAD!
More great gift stores to shop online:
Design Museum London
MoMA - Don't miss their CC+ collection!
MET Museum Store
Smithsonian Store
RISD Store
The Museum Shop at the Art Institute of Chicago
(photo credits: top grouping from The Store@Cranbrook Art Museum, next grouping from the MFA store in Boston, followed by photos from SCAD online)