DIY Wall-Mounted Easel - excellent design and tutorial with pictures. I'm planning to build one of these. Especially good for cement studio walls that can't be arbitrarily nailed/screwed into. Great space saver and great for vertical painting, which I prefer. Also easily disassembles, which is nice for multiple-use studios.
Inspired by drawer inserts used to store spice jars, I made my own out of scrap wood to store my oils and arranged then by color in my studio. Two this size and another one for large tubes of paints and mediums. I love this! No more searching through a box!! Every color at a glance.