For cheap art supplies and educational toys and supplies designed to live up to active play and use. While my first visit (and many of my subsequent visits) have focused on art supplies -- the most recent purchase was a really high-quality nap mat -- 2 inches thick with vinyl cover reinforced with threads guaranteed to last for 5 years for about $17.
The business is primarily a school supply business (as the name suggests) but has lots of fantastic supplies for families too. Grandma loves it at Christmas time (as do we all) because she can buy bulk art supplies and split them between the grandkids and her house for nearly the same price as buying smaller amounts of supplies individually. (i.e. we all get more actual supplies then if we'd bought the supplies in "individual packages" and in general the cost is equivalent to an "individual package" at a craft store. (oh I hope that makes sense). I've also seen toys carried by the likes of Discovery Toys (at prices 2 - 4 x the price charged by Discount School Supply). And shipping is always free on orders $59 and above (easy to do).
The website is www.discountschoolsupply.com they also have do catalog sales.