After a while, I wanted to make my own one which can carry more colours. I bought a cosmetic box and stuck more colours. I love this box very much, very light. For cleaning water, I use the bill plastic bottle. It won't leak.
Later, I used more and more colours so I bought a larger watercolour palette and put those pans in it.
After some years, I went back to a smaller size. I put some pans into a pill box which I bought from the drug store. You can put a short brush or more colours in another size.
For the easel, I made my own one with a camera tripod. These things are very light-weighted. The stool was available from an outdoor camping equipment store.