Looking for a great learning tool? Here’s an easy way to save money on workbooks for the kids: simply slide the sheets into plastic sleeves (such as these) and use dry erase markers. And we’ve found a great deal on dry erase markers! Right now, get the 12 count Crayola Washable Dry-Erase Markers for only $4.41 as an Add-on item. Add-on items ship with qualifying purchases over $25. 12