If you want a quite easy walk, Waggoners Walk is a lovely place to go. There are 3 manmade lakes to walk round with only a few steps to climb. These have plenty of fish in them. There is also a wishing well for you to throw in a coin and make a wish. Nice place for a picnic and quite shady if it is hot. The only downside is that there are no toilets but you could visit one of the cafes in grayshot for coffee or a snack and use their loos before you start your walk. Spent a pleasant couple of hours here.