There are some popular options for kitchen wall design, which are paint, wood, tiles, wall paper/ sticker and stainless steel.
When designing the kitchen wall, you may go for the similar colour as the cabinet.
Additionally, some may install a piece of stainless steel on the wall where the cooker located- for a easier cleaning.
You can use tiles or paint on the kitchen wall.
Or be creative, using paint and tiles and or wall paper/ sticker to create any pattern/ picture on your kitchen wall. The paint and tiles do not have to be the same colour.
Chalkboard wall’ seems like a good idea which allows you to mark down “important” things.