Police filled six bin liners full of lost property recovered from Brighton beach after Fatboy Slim's Normstock II party.
Dozens of mobile phones, wallets, purses, items of clothing, rucksacks and a silver bangle were handed in.
The bags have filled the lost property office at the John Street police station in Brighton.
Some of the phones have been ringing as owners try to trace them.
Lost property clerk Felicity Chapman said: "They have been going off all the time.
"We have been frantically fighting through plastic bags to answer them.
"It took us a week just to log all the items and is going to take us many more to try to find the owners."
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules hereComments are closed on this article