There is a Lost and Found box at Frontdesk, so check there.

[edit] Lost

[helios21] key for locker with the number 1
[kyllikki] Light Gray Hoodie, last seen on 3rd floor in Athens
[minh] a back and white wallet
[msantana] nikon d90 camera in a camera bag, lost on 22/08 somewhere in the venue

[edit] Found

Rubber chicken, goes by the name of Pollito. Left at front desk.
- cape town localteam will take once leaving
Transport ticket left at front desk
dark gray fleece jacket (found in a corner in Lissabon)
neoprene laptop sleeve (found in a corner in Lissabon)
Apple charger (found in a table at corridor to Heidelberg)
Black running jacket, thin material (found on couch near laundry bin next to food area)
Blue-grey backpack (found at conference dinner)
Key card for room C152 (found at the fire near conference dinner)
neoprene laptop sleeve (found in front of Heidelberg II on a table)