Thing 20 Thing 21

For me the purpose of these "Things" was to get some impression of what they might consist of, rather than immediate use-value. However, I was lucky in the Wikipedia article I selected as it had several mis-typings in it, so I was able to do some tidying up. Anything else I thought might just be tinkering or gilding the lily, so I didn't add the small amount of further information I had available.