I cook for my MB's. If I am making something for the boys that will keep i.e., shepherds pie, fish pie, lasagna, spag bol, fish cakes things like that, I generally do 2 extra portions for the freezer for the boys and an extra portion for MB's. If they have something else planned it'll go into the freezer for later in the week. They are all away for 4 weeks (sob, sob!) and I am living off frozen meals that they have acummulated (maybe they don't like my cooking!!!)
Next week I will restock both theirs and the boys freezers!
My 2 are not at school/nursery yet (and if I have anything to do with it, not for ages!) but they do have a 2 hour nap after lunch during which time I do washing and ironing, batch cooking (MB's use food from the freezer to feed boys at weekend and why shouldn't they, they pay for the food and they pay for my time when I am cooking it!) I'll hoover and dust the playroom.
In my last job, once the twins started nursery I would do family food shop (I do this now but with twins), recycling, various errands for bosses, collecting dry cleaning, picking up parcels from post office, buying light bulbs (for some reason we got through loads!) sorting through too small clothes, bagging up and putting in the loft (even did a couple of NCT sales to get rid of it but did get half the money we made!)
Loads of other stuff.
If you don't ask, you'll never know what your nanny will do. One thing to remember is though, if she doesn't have time one week to do all the "extras" don't leave it for her to do next week if you have time to sort it. That is one thing that pisses me off, if I am doing something that is not part of my contract and don't manage to do it one day/week and I come back after the weekend and it is all piled up for me. Makes me want to not do those things at all!
Right, I am off to finish painting the toy cupboard and shelves in the playroom! (See, they're away, I'm getting 4 weeks paid holiday so I will do something that is not normally classes as "nursery" duties.