On Valentine’s Day, Architecture for Humanity co-founder Cameron Sinclair kicked off the organization’s latest fundraising initiative with an appropriately amorous declaration: “My name is Cameron and I love architecture.” The campaign’s big finish is the “I Love Architecture” auction, an eBay-hosted bonanza of one-of-a kind sketches, renderings, prints, paintings, and more by fifty top architects and designers. Here’s your chance to be charitable and acquire a Frank Gehry sketch (an ink on napkin original). Among the 73 other works up for bid through Friday are a stunning photo of Biloxi, Mississippi by Robert Leslie, Richard Rogers’ no-nonsense diagram of the Pompidou Center, a whimsical self-portrait of an “emerging” Daniel Libeskind, and a Pac-Man-esque print by Kevin Roche. If you’re looking for something three-dimensional, we suggest putting your money on the “giant origami tiger” whipped up by Chris Bosse of LAVA. Or pop for the auction’s lone pigskin: an “I Love Architecture” football autographed by Indianapolis Colts quarterback Andrew Luck, who graduated from Stanford last week with a degree in architectural design. Every last cent of proceeds from the auction will support Architecture for Humanity’s humanitarian projects in more than 20 countries, so bid your heart out.