a simple wooden artist's easel, some canvases that can actually be painted in-game, and some basic color palettes to help get you started on your rising world pixel art journey! you might think there isn't much point to pixel art in rising world since you can import normal art directly into the game with posters and decals, but those don't transfer with blueprints, and pixel art made with these canvases will! also pixel art is just fun.
there are several different sizes of canvas available (note that you can freely resize them before placing, but the number of blocks they are made of directly affects the resolution of your canvas, so stick with the smaller ones unless you have the patience for a very high detail image that will take a long time to paint), and there are two different kinds of canvases. the 'reversible' canvases are made up of just the blocks you paint, and so you can see your image on both sides. this can be useful for signs, or images that you want to be able to flip/mirror. the 'realistic' canvases have a thin paintable layer on top/front and a frame on the bottom/back, so the image you paint won't bleed through. these look better if you intend to leave the canvas on the easel, rather than blueprinting the finished painting and moving it elsewhere.
there are three basic color palettes to get you started (limiting yourself to fewer colors can be a fun challenge or just simplify the process and make it less daunting, so it's up to you how complex you want to go), and they are made with the same material as the canvas itself instead of a more fluid-looking material, so that the colors you see are the exact same colors you will get if you use the 'insert' key with a brush/roller to copy the color, and then apply it to the canvas.
(there is also a purely decorative painter's palette, but the paint on it is metal for shine, so i don't recommend using it to paint a canvas) these palettes can simply be placed on the easel right beneath your canvas for easy access as you paint, like in the example picture at the top. you can also just mix your colors manually with the in-game ui, i just found that often the colors it shows differ greatly from how they look once applied, so i made these palettes as a starting point to make your life easier. you are also welcome to recolor these palettes, re-blueprint them, and share them here, in this thread! i would love to see this place fill up with artist resources in the form of different palettes to work with.
if pixel art isn't for you, you are also welcome to simply use the easel for decoration with the decorative painter's palette and/or slap a decal on a canvas to make it look like it has 'actually' been painted.