Easy DIY and so great to use! You don't need many things for this project.
You can use old jars from anything you like. I think it's nice to have different kinds of them but you can also choose to have all the same kind of jars.
In craft and DIY stores you can find chalkboard paint in different colours e.g. green, black,... you can paint the chalkboard paint immediately on the jar or you can use some primer first.
Based on the DIY of Wit&Whistle.
Have fun crafting,