I also use a clear plastic craft box with lights from Harbor Freight that are brighter and always ready vs the tap light I originally tried. My box is not deep but plenty wide - a big square like 14" maybe, probably for storing craft papers. I watched for one for awhile to find one without an imprinted spot where it wasn't flat. Since I figured this out I'm always set and a big bonus is it can hold pretty large blocks when not in use as a light box. Inexpensive (I think the lights were even free with a coupon). I'm sure you'll figure out something that will work if you look around.