I finished wiring the LEDs permanently. I drilled a hole in the 'concrete' base at a spot that is covered up by the chimney. Then I attached the Rod Stewart LED module that converts AC to DC with double sided sticky tape to the under side of a brace for the first floor. The two wires that come out from underneath will eventually go through a hole in the plywood the building is on and connect to the AC source. I forgot to take photographs of the hole in the base or the underside showing the module. I am not flipping the building over again, but this photograph will give a good idea of what I am describing.
Here are a couple photographs showing no light seeping out. Tape works wonders.
That's a Menards truck with the high beams on. I just have it plugged into an adapter for now. When I place it and a couple others permanently, I'll have to add some resistance. 
The Sanky Wanky Coffee Company is done for now. The extra kit parts, instructions, and extra 'coffee sacks and crates' cutouts are tucked away in the original box. I need to do some site work, which isn't much since it will be gravel driveway, some weeds, and then the three dimensional objects as I get those. Folks have mentioned 3D printing. I don't have access to a printer and one isn't in the budget, but I will get the objects as time goes on. 
Addendum: As I was typing I would add another AC feed for a couple LEDs in the office when I get office furniture, it came to me how to wire it using the existing module. I'll have to flip the building on its side to do it, so I can get to the module. Keep your fingers crossed I don't break anything in the process! Tune in again; Same bat time, same bat channel!! 
