Architecture for Humanity's "I Love Architecture" Charity Auction on ebay collects some pretty big names, including Frank Gehry, Steven Holl, Renzo Piano, Richard Meier, Bjarke Ingels, and Daniel Libeskind. Most of the pieces -- 100% of the proceeds benefit Architecture for Humanity -- are reproductions of older sketches and other drawings, though some of the (mainly) architects did special drawings for the occasion. If you're interested in donating money to AFH, and getting a fine artifact in the process, all of the pieces are worth browsing (be sure to scroll past the thumbnails on the main auction page for the full list). Below are close-ups from a few of my favorites from the roughly 70 pieces up for auction from June 19-29.
[Richard Rogers | The Centre Pompidou Signed screenprint on archival paper 24x36]
[Olav Lunde Arneberg Astrid Rohde Wang Pick Up Chicks w/ Blocks & Bricks Painting]
[Eskew+Dumez+Ripple Estuarine Habitats & Fisheries Center | Lafayette Watercolor]