I have here my build that is considered an SFF PC. It can contain a MATX motherboard and a 2-slot GPU up to 245mm. Here are the components in this PC Case.

1. Ryzen 3 3300X

2. Thermalright AXP90-X36 CPU Cooler

3. ASRock A520M-HDV Motherboard

4. ARSYLID K66 Air MATX SFF Case (For some reason, it won't let me manually add this case as written into the spec sheet).

5. Enhance ENP-7660 600W 80+Platinum Flex ATX PSU

6. Lian Li PW-PCI-4-24X Riser Cable

All it really needs is an NVME SSD, ram sticks, and a GPU that will give you a sick portable gaming PC or a simple Home Server for your living room. Rubber feet have been placed on the backside and the bottom of the case. I also decided to add a 120mm ARGB fan on it for extra airflow. Will come with both the motherboard box and accessories and case accessories as well.