I found a great use for those markers that get left in the easel tray with their lids off, destined to be tossed in the trash the next time their dried-out tips take a turn on the paper... give them a bath! The pens turned instantly into fun water color pens and kept Elliot entertained for his whole bath (without dumping any water out onto the floor--a miracle!). And since they were washable markers to begin with, the ink just washed right off the tub. They did make the water a little murky, and I did have to give Ellie one last clean rinse before the bath time was officially over, but that's a small price to pay for a fun night in the tub. And we got last hurrah out of that batch of markers!