A Raspberry pi 4 case with space for a WWAN or LTE hat. I also included a case without the slots for the LTE hat.

The LTE hat is:

[https://www.aliexpress.com/item/1005006876080180.html?pdp_npi=4%40dis%21CAD%21C%24%2026.09%21C%24%2024.79%21%21%2118.13%2117.23%21%402101fadf17318902276383581da7da%2112000038592147006%21sh01%21CA%21878804002%21X&spm=a2g0o.store_pc_home.productList_2010931110848.1005006876080180](https://www.aliexpress.com/item/1005006876080180.html?pdp_npi=4%40dis%21CAD%21C%24%2026.09%21C%24%2024.79%21%21%2118.13%2117.23%21%402101fadf17318902276383581da7da%2112000038592147006%21sh01%21CA%21878804002%21X&spm=a2g0o.store_pc_home.productList_2010931110848.1005006876080180)