Did Nazi's make lamp shades out of human skin or vegan plants?

https://en.m.wikipedia.org/wiki/Lampshades_made_from_human_skin

The results of those tests were reported on in the 2012 National Geographic television program "Human Lampshade: A Holocaust Mystery".[17][16]

In 2019 the Anthropodermic Book Project performed a peptide mass fingerprinting test on an alleged Nazi-era human skin lampshade stored in a small Holocaust museum in the United States; the testing results showed the lampshade was made from plant cellulose.[18]