Hot glue pom-poms to the ends of each marker for a quick "always there" eraser.
Place markers in socks for easy storage - this way erasers and socks are passed out at the same time! The socks are perfect for erasing bigger jobs. This is also a great way to eliminate "picking" colors if your markers or pom-poms are different colors!!!
Find an easily accessible place to store your marker set so students can grab them when they need them, and also help pass them out!
If you need a set of dry erase boards on a $0 budget, laminate a piece of white paper and lined paper back-to-back using the thickest laminating film you can find.
I have a set of Magic Boards that I now use (and LOVE) in my classroom, but students also have a set of these laminated sheets that they keep at their desks and can pull out to use anytime they want! Easy to replace and doesn't cost me a dime!
What are your other tips for using dry erase boards in the classroom?