my mom decided to give me her bestbuy credit card to get something for xmas / extremely good grades (3.8 ) . she gave me a $200 limit, but i have NO idea what the heck i want. any suggestions?

i'm leaning towards a new sound card for my PC because i play MP3's 24/7 off of it and i could use a larger hard drive.

i don't need any video games and i'm not into watching movies.

any ideas?