Pen-Touch markers have a permanent, quick-drying, waterproof and lightfast ink. These pens are available in packs or individually. You can choose different colors and whether it should be a fine or medium lace.
We recommend that you also take a look at Posca pens that can have similar functions. They are available in lots of different lovely colours. However, they have an ink that is not alcohol-based like marker pens whose purpose is to stick permanently to metal etc. They are extremely fun pens to use for different forms of decorations on different surfaces.