OK - we have just had a massive change because dh has just got a job (after being at home with me for almost 7 years!!)
We have four kids and a three bed bungalow. Here's what I do:
Always do at least one load of washing/drying per day (one is nappies, the other is clothes)
No-one is allowed to put stuff to wash unless it is actually dirty (the exception being dh who gets a clean shirt each day)
When I buy new clothes I get rid of the same amount of old stuff so we don't end up with too much. Each person (child and adult) has as many clothes as they need and no more.
Same with toys - before a birthday/christmas we have a clearout of unused/unwanted toys.
I always have a charity bag/box in a corner of our bedroom to accumulate bits we don't want/need any more.
In the kitchen we have a noticeboard and a whiteboard. Notes from school, dentists appointments etc, all go on the noticeboard. On the whiteboard is the weeks' events coming up, a running shopping list, dd's pocket money totals (they each get 10p per extra job they do round the house and get paid at the end of the week), things that need doing (eg car tax needs sorting, bills to be paid etc), plus a list of household jobs that need doing (eg put hooks up, lay flooring in bathroom etc)
If both dh and I want to go out, whoever arranged it first gets to go . We make sure all events are written on the board.
I don't cook, dh does that, or he tells me what to do. We meal plan and shop for food on a weekend (dh usually does this with dd2) so I know what meals are coming up. Tonight we are having pizzas and dh made up a dough when he came home for lunch, and will make them when he comes home from work (I would normally do it before he comes back but I'm taking ds1 to the docs).
Anything else?