Yeah, who doesn't know that, felt-tip pen left lying around without a cap, and you can throw it away. Not if you follow this tip:
Reviving felt-tip pens with vinegar
Dip the tip of the felt-tip pen into Vinegar. This time, put the cap on and let it soak overnight – and you can draw again!
Read also: Dried-out paint markers write again
FPhoto by Janine for meinhaushalt.at