Programmable Search Engine
Oh, the old Google Custom Search Engine is still around, rebranded. Think it was called also Google Co-Op once.I used it for some hacks i.e.: a people search engine once. And some SEO indexing checks before Google Search Console existed. Became pretty useless  as the index was then seperated from the real Google Index.Looking at it there is a way to upload XML files. Mhmmmmm... prop. good starting point for the next Google Bug Bounty Hunt.