I’m setting mine up now! It’s so much fun! I’m making one card a RetroPie build that has only the old computer emulators on it. Next I’ll make a console one. It’s really cool having a portable all-in-one setup.

This the carrying case I got for it. I know you said you don’t care for Amazon but I bet you could find this somewhere else.

Vilros Raspberry Pi 400... https://www.amazon.com/dp/B08PW7GFQX?ref=ppx_pop_mob_ap_share

Anyway, have fun!!