I believe it was Smithsonian magazine that ran a rather detailed "history of the wooden pencil" some time back. That should surely be included as a significant invention, although few now would know how to do anything with one.

The printing press is appropriately at the top of the list, but there's no mention of the typewriter that let eveyone sort of be his/her own "printer."

The sewing machine also was omitted, probably because the contributors think clothing "just happens" in a back room at WalMart(?). Without the sewing machine (and the feed sack) farmers in the central US would all have run around naked for several decades, so maybe they thought that's just a "social innovation" rather than an invention.

John