For that kind of money Dr. Cranky, you could go to Home Depot or Lowe's and purchase some clear plexiglas sheet and cut to size for a particular build. To hold it together, use clear silicone on the inside corners. Make the top last, align with the sides, and silicone it in place. The use of blue masking tape is highly recommended. I should have mentioned first to get a piece of wood to use as a base. MAybe I should try my hand at a tutorial on this subject?