Planning to build mini-itx rig

Yellow, big brain PC users 🖖

I'm traveling and moving a lot for quite a while now, and getting a rig was never part of my plan

But recently I realized I can get a mini-itx and bring it anywhere I want

Looking for your advices and build configurations

I want it to be like top, but without it just be overpriced. I don't care for LEDs, as small and as powerful as possible, high-mini-atx-end 😄

Thank yowoou