Any easy way for great dorm room sound? A DIY speaker system! Step 1: Gather supplies: 2 plastic cups, a toilet paper roll, Washi tape, Xacto knife and a Sharpie. Step 2: Trace the toilet paper roll on each cup and cut out with the Xacto knife. Step 3: Trace the bottom of your phone in the middle of the toilet paper roll and cut out; cover with decorative tape. Step 4: Put it together by sliding the roll into each cup and positioning your phone into the slot. Rock on!