Rocketbook

 Rocketbook  is a company with a digital notebook product with optical character recognition that can be used for handwriting posts and publishing them to one's website.

IndieWeb Examples

 * 2021-12-20 used a Rocketbook notebook in conjunction with IFTTT and Micropub to publish an article to his website.

Brainstorming
"The bottom of each page of the [Rocketbook notebook] has seven different faint icon images which are meant to allow the app to determine where to send the digital copy of the notes. One can send them via email or to a variety of storage or sharing services. I could imagine having different recipes set up to allow one to publish their notes to different websites based on the icon X-ed out. Given the micropub possibilities, one could also use the icons as a means of differentiating post kinds (for example, indicating that a particular post is a note, an article, or a bookmark). Another alternate idea would be to use the icons as a means of selecting which services to syndicate your content to (for example, the diamond could mean syndicate this post to Micro.blog, the bell could mean Mastodon, and the clover syndicates the post to Twitter)."
 * As described in Handwriting my Website with a Digital Amanuensis