I’ve been working on some videos on how to build a PVC GoPole. You can possibly see these on my Youtube channel, but I’ll post about them here eventually. If you can’t wait until then, you could always follow after Mike’s idea from reddit and make a GoPro spatula mount:
I’m constantly amazed at all the uses people come up with for these little cameras! If you don’t have access even to a spatula or zip-tie, you could always just mount one on your car seat with the headrest as shown in this post!