I'm probably a terribly pushy mum. DD1 is 4 and in reception and DD2 is 2 and at nursery.
We have an "activity sheet box" which is a box file with various sheets I have printed off the internet or photocopied from home education books, as well as colouring sheets etc, and the box is always available to the girls, as well as a box of crayons and pens. DD2 loves to scribble on pictures of Bob or Thomas, although she does sometimes scribble on pictures of numbers or letters and recognises some of them. DD1 tends to choose more worksheety things, but she has the choice of colouring if she likes - I print off things that she likes so that she has the option.
They often choose the box, as me and DH are studying with the OU so they like to copy. I only "mark" the sheets if DD1 brings them to me and ask me to, and they are usually all right as they are easy ones. We have a wall where they can stick pictures, paintings and worksheets that they are proud of.
They also both have workbooks - for DD2 they are basically colouring books again, with things like shapes or animals that she likes to chunter on about. DD1 has more school like ones - her favourite atm is a science book as she likes doing the experiments. Again the workbooks are there as a choice for the girls, although I will sometimes get them out and suggest them if I think they are getting a bit hyper.
DD1 uses reading eggspress, although she is needing quite a bit of help atm as it was a big jump up from reading eggs (ie from phonics to parts of speech). They also both go on the cbeebies website.
Me, DH and other family members read to the girls quite a bit, and they have their own bookshelves to choose from, as well as a big cushion next to it to snuggle in. DD1 also likes to read by herself or to DD2, and me and her take turns with paragraphs reading the bedtime story.
Then of course there is the less formal stuff like horrible histories, dressing up, playing shops, newsround, here comes science, cooking, nature detectives, painting, gardening, arsing about with mirrors or plants or whatever and so on. Plus trips to museums, art galleries, playgroups, historical landmarks and so on.
The school homework gets done, but in about ten minutes, and the school reading books get read maybe twice in the week we have them, because there is only so many times you can coax a child away from reading proper interesting books to read about Biff and Chip getting new shoes.
The teacher says that DD1 is having her reading assessed though, so hopefully we will get something a bit more interesting soon.
We kind of have a house that lends itself to what people would call formal learning, but I don't think that it is better or worse than any house with involved parents. Me and DH study, as well as reading, writing, following the news etc, and so does the wider family. I do, of course, think that both the DDs are little geniuses, but then doesn't everyone? :)