There's a nice park with a paddling pool and Wood Green animal shelter is just down the road, that's good for taking DCs to visit.
I don't think Stagecoach buses go there, it's a local firm IIRC. But there are buses. It would probably take about 20-30 mins to get into Huntingdon, not sure about journey times from Cambridge though.
The nearest supermarket is probably the Morrisons in Cambourne, I'm not 100% sure though so if anyone wants to correct me they are more than welcome!