I make a lot of little tools & scripts (as well as the occasional bigger one).
You can find them all here!
Extract day by day data from Google search analytics graph - A bookmarklet
A bookmarklet to let you easily download the day by day analytics data in the search console traffic graph.
Extract the crawl graph data from seach console - A bookmarklet
A bookmarklet to let you easily download the crawl data in search console.
How to rank track Google's hotel search - DIY SERP Research
A bookmarklet which lets you scraping ranks from Google's hotel meta search engine.