My favourite piece of technology is absolutely my mp3.
I got it like 3 years ago, when my best friend bought herself an iPod, and decided to give her old mp3 to me as a gift. She knows I love music and I had just a discman, which is very useful and I already use, but it's not very comfortable speaking about space (too big), weight (very heavy) and you have to carry a lot of CD's with you if you want to listen a lot of music, so it was a great gift and a nice detail what she did, also I think of her when I use it.
I use it every single day during my journey to university, I have to travel like 50 minutes from my house to get here, so it's very useful and it helps me to improve the trip.
Also I listen to music on it when I'm drawing, sometimes reading (or studying), when I go to the beach or at any kind of trip. I love listening to music when I'm doing nothing in particular, just laying back on my bed and before sleep, it's very relaxing and helps me to shake the stress of the day away.
I like it because it's my unconditional companion, it makes me happy when I'm sad or depressed, helps me to relax myself and have a good time anywere, even if I'm with bad company or in a bad place. It disconnect myself from the rest of the world and "protect" me form the outside, both of them things I like to do very much. Sometimes my parents get annoyed because of that, but it doesn't really matters.
Life would simply suck if I hadn't have my mp3...I can't imagine myself getting here every day just listening the sound of the subway or other people's conversations, when there is a blackout or anything I can use it to do something fun with my little brother too, we can share the headphones and know that everything will be all right; listen to the radio and inform ourselves a little bit, etc.
In case that you didn't notice...I LOVE my mp3! ♥