One of our best local craftsmen turns out these very nicely-made wooden shtenders to order.  It stands 3.5' tall, weighs 15.5 lbs, and is sturdily constructed of lumber-core plywood.  It is particularly popular because it can be used both sitting and standing without any special height adjustment.  The lower-level shelf folds in and out at the touch of a...finger.  The cost is $250.00 plus shipping.