A few nice public car auction images I found:
Lego Weekend, Holt Hall
Image by Dave Catchpole
Lego weekend to raise money for the East Anglian Air Ambulance.
6th and 7th August 2011 at Holt Hall (Field Studies Centre)
A fun weekend for children and big kid adults, including displays and scenes made from Lego, along with many Lego related games and competitions, a Lego Play Area and bouncy castle. Refreshments were available for the adults while the kids looked at the displays etc.