This is what I started with: A $75 dresser from a peddler's mall.
Took all drawers out
Stapled screen on the back top for ventilation (out of site)
Knocked out the pieces of wood in between the bottom drawers to get the "shell" of the "tank"
Took the top drawers out and cut the backs off them just to make a "facade" to hide the lighting
Got drawer "facades" on and everything stained
Added melamine boards to make the "cage". The top was left completely open to allow the UVB lighting to get to my beardie 100%
This is my twins chilling with Rex
My lighting is just mounted to the top of the dresser, stapled the heat lamp cord very carefully, and screwed in the UVB ballast. Cut out holes in the back of the dresser so the cords could go through. As you can see, I left the top of the "cage" open.
Completed product
And here he is, happy as a lark, after eating a bowl full of superworms for breakfast!