Meh. I don’t use them, but I occasionally see people use the little clock or calendar widgets. Play around. See what you like. I’m more of a clean unobstructed desktop guy myself.

Oh hey, now I’m reminded, if you haven’t set up time shift yet, do so now. If you break anything or even make a change you don’t like and are unsure how to take it back, timeshift is easy and will whisk you back to where you started.

Another bit of advice, make a bookmark folder in Firefox for any tutorials or references or forum posts about customizations you’ve made. It’s very common in the Linux world to perform a full wipe and reinstall the OS if there’s a major update. It can really help to have a reference to remake your personalizations after a fresh install.