Glass shell: We recommend the Iron Rabbit quenched crystal frosted shell. It has a good hand feel and a high appearance level. It also has magnetic attraction, which is very convenient. The transparent version is quite sticky to fingerprints. I've used FlashMagic and Turas, but they're okay.

Silicone case: You can buy the official one. After all, there are too many counterfeits on the market.

Clear water shell: None of them are expensive. I have bought from UGREEN, Flashmagic and some unknown brands. Just go for the cheaper ones.

PP case: This one also feels good. I bought the red armor one. The anti-slip effect is quite good. Most importantly, it's very thin and light. Wearing it on the phone, the grip feels very good.

Other materials: More or less the same