I rushed to comments just to make sure parky towers was there. That is a great website. Also on the same spirit, the motherboard+cpu for processors like J4105

I rushed to comments just to make sure parky towers was there. That is a great website. Also on the same spirit, the motherboard+cpu for processors like J4105 or J1900 often are found for less than a raspberry. Even better if used. Lastly, worst case of maximum cost-benefit, you can try powering on a notebook replacement motherboard (which usually comes with RAM and CPU soldered). Here is a video using an old Thinkpad replacement board: https://www.youtube.com/watch?v=t2vrRZqDy74 https://www.youtube.com/watch?v=t2vrRZqDy74