@darius I wrote a big (for me) and award winning (in the library world) WordPress plugin back a few years ago and our library switched to a new system that's paid for by our consortium, so I'm not developing it at work anymore. I asked and they're fine with me having the code now. It's a room booking and event calendar for libraries (and anyone else) who can't afford the big names. Free as in beer.
I need to overhaul it. Wonder if it's worth dusting off for the fediverse...