How about a nuclear reactor? You could start to build one as you are working in the lab.

I can imagin it. Bottles of sulfuric acid, methanol, and diethyl ether sitting in a attic. The ether will react with the moister (water) and oxygen in the air to form peroxides, which will initiate a chain reaction releasing a lot of energy. You'll need a cooler full of dry ice to store the ether. At least if I was playing with ether I would keep it in dry ice. No only that the sulfuric acid will collect on the wooden beams and corrode it. Then you'll also have sodium hydroxide, nitric, hydrochloric acid laying around a wooden framed attic.