What can I do to conseve water

I would conserve water by putting a milk jug in my toilet to save the water from just going down the drain.Installing a shower head might be expensive,but not as bad as a water bill it saves water so you don't waist as much as taking a shower without one.
Watering a plant at maybe 3:00 is pretty smart because it won't evaporate the water won't evaporate that quick.Also using dish water isn't harmful like the old dish soap.That is what I can do to conserve water.