My most used is to copy text where the formatting has been stripped, the bookmarklet prepends formatting instructions, and then I paste the whole thing into claude which sorts the formatting.
Me thinks I've underestimated what can be done with these.
I wanted a friends feed in eBird (its social model is inscrutable) and ask Claude to make a bookmarklet that showed the most recent lists of my friends sorted chronologically. One shot and done.
Our internal corporate CRM is siloed data queries spread across overlapping views. I have a bookmarklet overlay my own interface on top and fetch data using the existing session token. (which is transparent/automatic - your browser just hangs on to the session cookies for the fetch calls)
It is also a very easy win for a company to just focus on the one stolen element or component in a lawsuit to knock competition out of the space and has happened multiple times.
In large corps you usually have separate teams for the UX design to the frontend devs and the people specifying the features.
In such a scenario the UX designer can utilize such a bookmarklet to get a quick copy of the existing dashboard into figma to then iterate on the UX and try out different approaches for that specified feature.
This scenario would not be in violation of any terms and it's unclear what noobplus was actually thinking of