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

The holiday events and decorations and outfits. I don't use the voodoo doll or future cube either. I make my own special days and love the customization with it. The MySims dolls I tend to sell right away too. Not a lot of room for them on shelves and often cause more routing issues for Sims than anything. They just feel like how the gnomes were, only good for spreading fires in a house.