J.C.
Some of the things I do with my kids, individually and alone are: bike rides, hiking/walking/exploring, ice/rollerskating, martial arts, crafts, read the same book and discuss, cooking/baking, one on one basketball, I'm not a member because it's a bit pricey for me, but the YMCA (or equivalent) usually has lots of different family type activities. That's all I can think of, good luck!