I would love a floor plan of Rivendell. I have many files of pictures and I've been trying to figure it out.
It would be so cool if Barbie had pointy ears.
Aragorns pipe is available, and I think Bilbo's. You might try ebay or noble collection.
Among my large collection of Tolkien books (call me sucker, if it says Tolkien, I'll buy it!) is "Atlas of Middle Earth" which is very fun. I recommend it, if you do not have it. It has a sketchy plan of Rivendell's main house with the two great halls, bell tower, and Bilbo's south-facing bedroom. These were details mentioned by JRRT, but not much else, not even the materials of which it was made.
My lastest book, purchased a few days ago, is "JRRT, Artist and Illustrator." This is a delightful book of his sketches and drawings. He does an illustration of Gandalf riding down into Rivendell in "The Hobbit"--and Rivendell looks very different from the place he later illustrated for "ROTK". The valley is deep in the later books, but shallow in The Hobbit.
Books of floor plans have surprising appeal. They give a reader a nice imaginary tour.
The Atlas book also has an excellent guide to Minas Tirith.