@Zen, I’m a bit jealous. I’d have a martini, but it might interfere with driving to the preschool to pick up my son.
@Dog, I have to second the insect idea. If you already have a half-way decent digital camera, finding and photographing insects can become an addictive hobby. I sort of fell into it by accident, with my son who loves bugs. We take pictures of everything we find and keep an album. We look at different websites together to ID strange insects, and get really excited when we find something uncommon, like a hummingbird moth. The only problem is that now I want a much more expensive camera with a macro lens and the time to take photography classes!