I made one for my HTC One SV . It was quite an adventure, I miced out all the openings needed for headphones, charger, etc. and pocketed it out as two halves (front and back) then left just enough "meat" on the edged for some super tiny brass screws to hold the two sides together. It worked perfectly and the button heads on the screws held the back of the phone just high enough from table so that it amplified the music when placed on a glass table top! (and kept the phone dry when my kid spilled his juice across the table. There are wooded phone cases for alot of phones (especially galaxy and iphone) that are two halves (top and bottom) and they slide together with a little tiny metal clip. unless your like me and want to make it because when someone says "is that wood", its much more fun to say "I made it" than "I bought it" its easier just to order one. the HTC had a curved back and i suck at 3d so I cut it square and used small bits of foam to support and stabalize it within the case, If you can get a hold of a 3d model of one your in business....
"The most valuable tool I have is the experience of others" - Me