Share on ThriftyFunThis guide contains the following solutions. Have something to add? Please share your solution!
Are you bored and just want to chill out with music, but you lost your headset? You switch your phone to the speaker but still you think it needs more volume? Try cutting off the head of a plastic bottle. It should look like a funnel when you cut it. Place it upside down over your phone speaker and you'll enjoy louder music. This works well indoors.