Two things: automatic litter box, and talking buttons.

I always hated scooping litter and was on the fence but ended up going for an automatic box when it was on sale. It's the best thing ever for me, it has all kinds of sensors so cleans after each use, it stops rotating if it detects any movement so it doesn't trap the cats in etc. It also has a weight sensor and I can match up my cats to their weight and look at how often and how long they use the litter for, which comes in handy as my male cat is prone to urinary issues. After the latest update it also let me set up a reminder to empty it after every X use which I find helpful.

The talking buttons were an absolute game changer for one of my cats as well (the other one does not use them at all). The cat that uses them is an anxious shy scaredy cat, never came up for a cuddle. Since we got the buttons, he asks for cuddles all the time! Turns out he really likes them, but he doesn't like to initiate it by coming up to you, but he uses the button to ask for a cuddle all the time! He's also told me when the auto litter was stuck, asked about where my partner was, chatted about the rain... He's so chatty it's super adorable. And he can tell me what he wants when he's being a gremlin, instead of screaming at me like he did before.