What’s a gameplay feature you’ve NEVER used? New ideas to spice up your game!

I have never used the cupcake machine. Never owned a retail business or veterinary clinic. I’ve never participated in a “neighborhood brawl” or met patchy. I never maxed out a toddlers skills/aspiration before aging them up. Never fully explored JA or GrF and all that they offer. Never played an evil sim or had a celeb with a bad rep.
For those who never tried the Freelance careers, do try them. They are convenient to say the most. If you are the type of player who doesn’t like waiting for your sims to come from work or are interested in other game play but still need means to make money, then freelance all the way.