DIY 10 Easy Phone Projects. DIY Phone Case, DIY Phone Pouch & DIY Headphones. In this DIY tutorial I take my new Samsung Galaxy S5 and show 10 simple ways to make it more girly and fun. I am beautifying a bunch of phone cases, headphones and making a protective pouch. For the DIY phone pouch we need a cup, bobby pins and yarn. Cup + bobby pins = knitting loom. Then take some yarn and knit a cute phone pouch. For headphones you need some beads and for phone cases a plain or transparent case.