Dodocase VR turns your smartphone into an immersive 3D experience using Google's Cardboard design.
Step 1: Add the Straps.
My modification lets you use it hands free.
Step 2: Suspend the Weight.
Use elastic that's strong enough to hold your phone on your face.
Step 3: Adjust for Comfort.
Straps can easily be tightened.
Step 4: Let It Slide.
Loop elastic and sew flat so it still slips through.
Step 5: Feel the Freedom.
With your hands now free you can really fly. Try watching the roller coaster simulator while riding a stationary bicycle. You can even clutch a barf bag if necessary, without stopping all the fun.
Step 6: Future Functions.
Make sure straps don't block magnetic button function or camera view cutout as these may have a future function as an augmented reality headset when new software is designed for Cardboard VR.