Have you ever bought something then later you don't want it anymore?

I bought this cute backpack but now I don't want it. I bough if so I can use it for school. I bought it about two weeks ago so I can't really return it anymore. Should I keep it, give it to someone or donate it? My friend made me feel like crap because my cousin bought me a small very cute backpack but the teeth is coming apart and tje zipper broke. My friends may think my cousin will be very dissapointed in me for getting another backpack. That isn't the reason why I don't want it anymore. I feel so clueless. I see something cute I gotta get it sometimes but regret it but not always.