Once a small part gets lost in grass or on floors, you can waste a lot of time looking for it. To find it quickly, put a nylon stocking over the end of your shop vacuum hose and fasten it with a rubber binder. Turn on the vac and play it over the area where it might have gone. If the part is there the vac will suck it up and hold it on the nylon so you can just pick it off.
If you replaced all the windows in your home with Energy Star qualified windows, you could cut your heating and cooling energy use by an average of 15%.