If you're looking for a lavish gift for an art-lover you know, but want something more unique (and less expensive) than just a painting, you might want to check out Artnet's annual holiday ephemera auction, which starts today at 1 p.m. and runs for the following week. Or you can just look. The sale includes memorabilia signed, and often illustrated, by some of the big names of the late twentieth century. There are postcards created by Andy Warhol (estimated at $4,000-$6,000) and Sam Francis (estimated at $10,000-$15,000), a t-shirt magic-markered by David Hockney (estimated at $5,000-$6,000) and the above jacket, which Keith Haring marked up for a sixteen-year-old fan (estimated at $30,000-$40,000).