Once your Sims have visited the DMV for a license or bus pass, you can send them exploring just by clicking on them, which brings up a radial wheel of options. This mod from KawaiiStacie adds a bunch of rabbit hole actions-activities your Sims can do on their own without you following-that activate buffs or improve your Sims' relationships with those closest to them. (Image credit: Electronic Arts, Maxis / Modded by KawaiiStacie)
