When applying for a job, it is important that you prove why YOU are the right one for the job they offer. And that you are motivated to get that job. What recruiters usually don't like are generic resumes, that have no relation to your (possible) future position.

So you should think "what kind of code will I likely have to write there?"

Is it some database-access? Is it some networking code? Is it some admin-script? ... Then pick some related functions from your home-project (and the corresponding test-cases), polish it and submit it. And don't forget to add some documentation ...

I cross my fingers for you! Rata

P.S.: don't forget to add a note that you have written your code "at home for your leisure" - and that it is not some code you have written for some other company ... and that you are not giving away their "secrets"