It's the flooding problem most of all. I'm in one of the few Manhattan co-ops that still allows washing machines and dryers and it's a wonderful thing to have it in my apartment. But many landlords, co-op board and condos don't permit them because of the flooding.
A couple of my friends and I made hot ice for our school science fair. We used sodium acetate. This project won first place at my schools science fair!!! Materials: Stove. Pot. A spoon. A glass cup. and Sodium acetate (you can find it online or in certain heat packs). How to do it: You heat water in a pot and put the sodium acetate in the water.
Choosing a Dry Ice Cooler. You can choose to use the cooler you already have if you want to use dry ice. The trick is, you may need to add blankets or newspapers to the cooler to ensure that the dry ice stays cold as long as it should. It is also important to keep in mind that your cooler must be full. Dry ice works best this way.