Air dry overnight (esp. for people without outside space). We use cloth nappies and don't want to tumble them, plus shirts, underwear and my skirts and dresses are much happier if I air dry them. I get the wash on to finish some time in the evening, so that they get a good 8-12 hours or so of drying without being in our way because we're asleep. The majority of it is dry, or at least a lot drier, by morning, which saves having washing hanging all over the place in the day and means I can put most things away quickly the next day.
On that note, air dry dresses, skirts, shirts etc on a hanger. Practically negates the need for ironing as creases fall out and they can go straight into the wardrobe when dry.
Do multiple tasks at once that are related. Eg, if I'm going to run a bath for DS, I do a quick wash of the bath and sink etc whilst the water is warming up. I use the water that's warming to clean the bathroom and rinse. Takes about 5mins and leaves places looking gleaming albeit soaking from DS' splashing!. Same for warming water to wash dishes; I wipe down the surfaces and the sink quickly, leaves it looking very clean despite being very simple.
Have very easy toy storage that doesn't require unclipping lots of lids or opening lots of boxes. We have a simple unit with open cubby holes for big toys to go on, and 2 pull out boxes with no lids for smaller bits. 3mins of throwing toys in its direction and you have a tidy room, and the unit doesn't look crazy.
Slightly more involved but... have a 'flow' to your house. I'm not talking woo, I mean being practical about where you put stuff. If you have a pan you use a lot, put it somewhere in easy reach. I've lived in too many places where the cupboards get crazy because all of the useful things are right at the back or really high up.
Throw bleach down the toilet last thing at night. With the first flush in the morning it will sparkle and you've practically done nothing!
(can you see I like these types of threads too much? 
)