"new" T14 gen 2 i5-1145G7 - upgrade suggestions?

Just received this 2nd Thinkpad from Amazon for $230 in "acceptable" condition but it looks perfect and is running fine. What are some simple/cheap upgrades that are possible/recommended?

Storage is 500gb NVMe SSD and memory is 16gb and "0 SPD modules" so I assume 1 ram slot available?

I was thinking of trying to make it a hackintosh or dual booting with linux. I want to be able to do light audio/video editing using it and besides that just basic computing.