There are two waterfalls to the SE of Ubud that are easily accessible and within a short walking distance from the parking lot.
The first one we visited was Air Terjun
Kanto Lampo. The entrance fee was just under 1 USD. We arrived there at 8 in the morning and were the only ones there for about 40 minutes. The waterfall and river were full of water so it was only possible to get photos from the side. It is a great spot for getting in your swimming gear and standing under the falling water. It gives you a good massage too!
Our next waterfall was a short distance away, namely Air Terjun Tibumana. The parking lot is next to a temple. Pay the 1USD fee to see the waterfall and walk down the steps and along the little river. It is a rather popular waterfall and it was difficult to get photos without other people in the shot.
I took this photo through my polarized sunglasses, as a little experiment. The picture below was taken without a polarized lens.
Once we were back on the road, I could not resist stopping in the rice fields to launch the drone.
It is really unique seeing a waterfall from above!