The paint box
I carry my paints in this compartmented box and use the lid as my mixing surface. The advantages with the paint box is that I don’t have to squeeze out new paint every time; it’s easy to control the amount of paint I get on my brush; and it also helps to keep the paint fresh for up to a week if it’s kept out of the sun. It’s also easy to clear out the compartment and replace old paints.
I organise my colours according to their values, which helps when picking colours when painting. Whenever I notice the paint is drying, I can revive it by adding and mixing in a few drops of water. The only downside is that you can’t put it in the bag pack and has to be carried level in the hand, so that the paints don’t overflow into neighbouring compartments. You can search for “24 well paint box” online and find something similar.
I use mostly Winsor & Newton and Holbein paint brands alongside cheaper paint brands like Reeves, which is great in quality as well as price.