I keep my lists in LibreOffice too.
I have one called DAT RECORDINGS, one called TAPELESS RECORDINGS, and one called CASSETTES.
I also have one called SHOWS ATTENDED which gets an entry whether or not I record.
Pretty nice. Do you fill all this out in a form of some kind or do you just manually enter it all in a database? I'm trying to get my stuff entered in efficiently as much as possible in Libreoffice Base. When everything is entered in correctly, it will generate different certain queries that can be used for various reasons. I'm trying very hard to make it so I can pull up queries on stuff I recorded, certain artists or things I recorded, the different cities / countries I have recordings at (or have in general), or even stuff that I recorded during a certain era of time + many more. So far, I'm loving the controls I've enabled and maybe this could be a benefit for other people in the future.
There are pull down menus to show certain artists, venues, the cities, the states, as well as countries. The good news is also the information is saved for the pull down menus once it's entered in, so you don't need to keep typing it all over again. You can input information on the gear you used to record with and any generation detail, if applicable. As you can probably understand, when more things get put in their respective categories it's easier to sort through it.
I am attaching a photo example so you can see how it works.