I'm not sure if you guys have tried. Wet Palette painting. This is godsend I tell you. Paints will remain fresh forever like straight from the pot for hours on end! Go try it. I tried and now I can never paint without it. It will save you sooo much time from constantly opening and closing you pots to take paint. And also save sooo much paint that is otherwise dried on the normal palette. It's amazing like magic!
Here's a WIP shot of me using my wet palette!
Try it if you guys haven't. You will never turn back!