Yes, there are some interesting and useful things you can do to remineralized reverse osmosis water:

1. Add in electrolytes: Reverse osmosis water has very few minerals and ions which makes it acidic and can cause a leaching effect in your body. You can add in some good quality electrolytes to make it more alkaline and beneficial for health.

2. Use it for hydroponics and plant growth: RO water is excellent for growing plants since it doesn't have the salts and chemicals that normal tap water does. This allows you to control the nutrient content in the water to optimize the growth of your plants.

3. Drinking it for detoxification purposes: I've read that some people drink reverse osmosis water for detoxification purposes. Since the water has removed most of the contaminants, it supposedly helps to cleanse the body.

4. Mixing nutritional supplements: RO water can be a good medium for mixing and dissolving most nutritional supplements since it is free of contaminants.

5. Enhancing the absorption of certain nutrients: Some people claim that drinking water with a low mineral content like reverse osmosis water can enhance the absorption of certain nutrients like calcium and iron.

6. Hydrothermal healing: Some practitioners use reverse osmosis water in certain healing practices. For example, they may soak your feet in it for detoxification or apply it with herbs in a process called hydrotherapy.

7. Converting it to other forms of healthy water: There are filters and machines available that can remineralize the water, add in healthy minerals, and even infuse it with flavor. This allows you to get the benefits of reverse osmosis without having to drink plain water.