ThinkGeek is offering a set of USS Enterprise NCC-1701 coasters.
There are six glass coasters in this set, and they feature a “layered design on top and bottom of glass for a twelve-layer effect.” When “you put them all together, the whole ship is before you in 3D.”
If the top coaster is removed, you can “see through the primary hull down into the saucer and nacelles.”
The coasters are four inch square and a quarter of an inch thick. When stacked, the stack is an inch and a half tall.
The Star Trek U.S.S. Enterprise NCC-1701 Coasters can be ordered here, where the cost for the set is $19.99.