If the library has a calendar (in this example a wordpress events plugin) it would be awesome to be able to search it from the catalog. So if you search for Knitting you get at the top of the results the knitting event that is happening at the library before the bib record results. This is a suggestion from a patron I met today.
There is a plugin for managing library events now from LMSCloud, maybe a parallel search and showing it on top of results would be an option that could be done with hooks/JS?
Our plugin could easily do this as everything is based on Koha's API.