The ultra thin case that came with the pack is definitely ultra thin which will only serve as a scratch protector for your S8 (which I loved). This protector won't give you any protection when you drop your phone but definitely looks sexy on your phone without the ugly bulk compared to other cases.
The car mount is easily the best I've ever used around this price. The suction is strong and the installation is straightforward.
The mini 3-in-1 key chain is very useful and I always bring this with me as a portable stand wherever I go. The stylus and the screen wiper that comes with it - not really that useful.
The car charger is good and pretty as it got a square LED light around the charger.
The stand is steady and firm.
The screen protector is easy to apply and fits like a glove on the edge of the screen. However, since the screen is still "edge", after several weeks of usage, the sides do come off - but you can easily put it back.