Apart from the obvious, I run a wormery and get the most gorgeous compost for growing seeds in, which in turn helps plant up my veg beds.
I like preserving and am adapting all my favourite recipes to reduce the amount of sugar and use honey instead. My favourites so far have got to be Honey and Lemon Curd and Clementine, Whiskey and Honey Marmalade. I have a lot of fruit bushes dotted all over and always get mammoth crops of blackberries and raspberries.
I am also a bit obsessed with making yoghurt. I have a lovely heirloom culture which can be used indefinitely that makes superb Greek style Yoghurt with honey (it can be strained so thick, I use it instead of whipped double cream, particularly when it is fresh made and has a milder yoghurt flavour) or a French set style which is superb with Vanilla. (I was lucky enough to tutor a gentleman from Madagascar through his Maths exams a few years ago and when he passed, he gave me the most enormous bundle of Vanilla pods that he grew on his family farm. They look nothing like the dried up things we get and he did explain they keep the best for themselves. Even after a few years, they are still juicier than I can get in the shops).
I also like hill walking which is just as well with an energetic Boxer dog and living in the Peaks.