Using this Spigen case now. First one I've found that seems to offer decent protection without a lot of bulk. I tried a Terrapin tpu case but it seemed really light duty.
Huawei – Spigen Inc
This is an awesome case, I use it on an iPhone 7.I went ahead and ordered the the Honor 8 Spigen case from Amazon.
https://www.amazon.com/Spigen-Rugged-Resilient-Absorption-Huawei/dp/B01LXTROW1/ref=sr_1_4?s=wireless&ie=UTF8&qid=1481006445&sr=1-4&keywords=Honor+8+case
If you want to get a really premium case for the Honor 8, Hand & Hide has just released one. I had one of these for my old Nexus. Really finely made leather case.
https://www.handandhide.com/products/huawei-honor-8-leather-wallet-case
...in any other colors?