Thanks everybody for the great ideas! Good news is that my due date was bumped up a little and I'm nearly "full term" so I won't be getting to do very much the next month or so, and besides that, it's been so soggy here. My poor boys are in a swamp, about the only place that doesn't have standing water is where the round bales used to go last winter. The pond is flooded, etc.
About the only thing I can do right now is hand walk or line drive on the gravel road, which is washing out every 1/8th of a mile. At least I can still do that.