From computers to cameras, handbags to watches, even boomerangs - you would be amazed what items forgetful passengers leave behind at Sydney airport.
More than 1000 items lost and never claimed are now up for grabs at auction.
Every year the 42 million people who go through Sydney's airport terminals leave all sorts of things behind - at gate lounges, food courts, bathrooms, and often in security trays.
If the owner can't be found, the items end up being auctioned for charity.
Headphones, sunglasses, row upon row of electronics, laptops and tablets and expensive cameras are all up for sale.
What else do travellers leave behind?
Fluffy koalas (by the boxload).
Boomerangs (that definitely won't be returning to their owners).
A cane toad coin purse (accidental or on purpose, we wonder?)
A Star Wars light saber (there's a very annoyed Jedi out there somewhere).
A $1500 Gucci handbag (the owner must be kicking themselves).
Masha, the talking Russian doll (teach yourself a new language).
Airport staff have also found perfumes, a ukelele, a trumpet, blood pressure equipment, rollerblades, badminton rackets - even a chainsaw.
The online auction starts on Wednesday. More details here.