To create your own water cycle you will need to get a plastic bag, tape, food colouring (optional), marker/vivid, and water. After getting these materials you can write the four stages of the water cycles on the bag (this is optional), but it can help you visualize whats going on inside the bag. Then put the water inside the bag, and if you have, put your food colouring in it and mix it carefully. Now you can check it every hour and see whats happening inside your bag.
The changes I saw were that the small water droplets got bigger from the previous day. I enjoyed doing this activity because it allowed me to understand more of what happened to the water when it has been placed on the window.