Here's a simple case I made up for this small WT32-SC01 3.5" Dev board.

Here's the board I purchased: https://www.aliexpress.us/item/3256803559528956.html?spm=a2g0o.order_list.order_list_main.51.5f671802NDyheU&gatewayAdapt=glo2usa&_randl_shipto=US

The case has an opening for the USB-C port and that's it.

Source files included.