The TS4 UI Sound Kit includes most of the clicks, blips and boops from the game’s UI in mp3 format for you to use in your Sims 4 video content! It includes things like phone notifications, build/buy placement, panel toggles, and buttons.
Special thanks to thepancake1 for helping me find the UI resources. If you are a modder and would like the AudioVocal IDs, you can find my list on MTS.
Enjoy!