I would like announce now you create a litho with the light package at is only 3/4" or 1" thick. No boxes are needed.
I found a 1/4" thick x 8" x10 " or 6" x 8" LED light pad from a wed site
www.candlestonegifts.com . He and I have been testing the new litho material called candlestone. His claim is the candle stone is better that glacier white by Corian.
He sells many different sizes for the litho carvings, There is a very nice night light kit available at a very reasonable price.
He has agreed to give the CW carvers for the next 2 weeks a 10% discount on any orders, just use the promo code "cwconf"
if you order. I showed the litho and night lights at the conference and it was well received.
Take a look at the pictures.
I also found a standard 3/4" Kmart frame for $3.40 that had a 1/2" recess and the 1/4" litho and 1/4" light pad fit in just fine.
If you have any questions I will send you a picture of the sled to hold the night light carving material later.