NAG has some really great items on its silent auction list (tonight!). But if art or open space is more your thing, check out OSA’s silent auction going on now at BraveBrooklyn. (Better yet, bid at both auctions – they both support good local causes.)

The auction features work donated by artists Fred Tomaselli, Richard Serra, James Case Leal, Nathan Koch (shown here), Adam Taye, Chris Burnside, James Woodward, Robbert Jan de Oude, Bradly Brown, Matt Jones, Monica Cook, Jesse Witkin, Khris Graves, Karen Bausman, Skewerville, Paul Campbell, Sean Hemmele and more. There are also signed books by Matthew Barney, Joel Shapiro and Mark Di Suvero.

You can online at BraveBrooklyn or show up on Friday December 11th from 6-11pm for the closing reception and final bidding at 30 Nassau Avenue, at Dobbin Street.