We had a set of 6 chunky markers and he left them out for several days without their lids on. Of course they were completely dried out by the time we realized it. This happened about a year ago, and he still has, and uses, the same markers! His easel has a spot for a cup of water (for watercolor painting obviously), and one day he filled it up with water, dipped his dried markers in the water, and began drawing with them like nothing had happened.
I think I’ve read somewhere that you can use dried markers this way, but I have no idea how M knew it! He has made some really neat artwork in this way… kind of like regular marker drawing with a bit of watercolor painting here and there. Again, he’s been doing this for the past year and the markers are still working great (as long as they are wet).
Want to see a little demonstration? :)
Dip the dried up marker into the water:

Color on your paper:

And voila! Beautiful artwork:

So, put those old markers to good use! :)
Have a beautiful day! :)
(Mr. Grumpy was not happy about posing with it, but wouldn’t let go of it so I could take a picture of just the bag.)