with some stuff

[bosun]

Is the following sentnece correct?

I lost my backpack with some stuff in it such as, a camera, films, books and so on. or

I lost my backpack and there were some stuff, such as a camera ...

( which is better? or Do you have any other suggestion??)

[Mister Micawber]

.
Stuff is the uncountable equivalent of things. Correct your sentences this way:

I lost my backpack with some stuff in it such as a camera, film and books.
I lost my backpack and there was some stuff such as a camera, film and books.
.