Palette...temporarily

I'm not someone who has gobs of paint to squeeze out on various palettes....I live on a budget too just like everyone else. The other day I needed to grab my pochade box and go painting on location at Lake Cachuma. I scraped the paint off my studio palette and put it in the pochade and off I went. After getting back I needed to do touch ups on that PA painting so I just set up my pochade box near my studio easel and finished the painting. After that I started a quick snow scene and continued to use the paint I had left in the pochade box as a make shift palette. Works just fine and I've been doing this off and on for a few years now. No wasted paint...no messy transfering paint. I think it would work even better if it was just a larger palette with a small lip but used in the same manner...maybe I'll build one in the future. If I made the lid more air tight and added a sponge soaked in clove oil I wouldn't need to refridgerate the palette at all. The clove oil would keep the paint from skinning over for up to 2 weeks. Hmmm.......