The XCY X51 is a mini-PC and an incredibly small one at that. Based on the Intel Celeron N4100, the X51 features 8 GB of RAM, a 128 GB M.2 2242 SSD and a host of ports. The 62 x 62 x 42 mm device weighs 121 g and can be purchased for US$179.
https://www.notebookcheck.net/XCY-X51-A-mini-PC-that-is-shipping-for-under-US-179.484340.0.html