How to earn money to replace something? I'm 15?

So I had these headphones the 30 dollar ones that are like iPhone headphones that have the mic. They actually weren't mine but they were my sisters and I was in class and they were on my desk and I turned my head for 2 minutes and they were gone I checked my pockets my backpack and all around my desk and I still can't find them. And my sister doesn't know and I'm pretty sure someone stole them from me when I turned my head. How can I earn the money to buy her some new ones I'm 15. Oh and if my mom finds out someone stole them she'll be Mad so I can't let her know.

There are several issues on this posting. The word "sisters" happens to be plural. If you care not to use the possessive, then, seek another way to express the thought. Otherwise, you must use the proper, correct and appropriate tense. Sure, others use this, not bothering with the apostrophe. If you care to write incorrectly between friends and schoolmates, and you elect to accept this as correct, that is a private matter. When you communicate with planet earth asking for advise, help, assistance, you must write correctly. Secondly, the earphone were not yours to take to school. You do not mention you had permission to use these headphones. You did mention that your sister does not know they are missing. The ethics of stealing property is also covered by laws. It is against the law to procure items that do not belong to us. How to raise enough money to buy a replacement? That is up to you. We have no clue where on planet earth you live, the access you may have to things that can generate income. At fifteen years of age you should be of age and intelligence to be able to resolve a simple issue such as this.one. Thirty dollars is not a large amount. Figure this out and do not take things that do not belong to you.