If you need to hacksaw through a fastened pipe or rod, but the space above is cramped, try this: Remove the hacksaw's blade, straddle the pipe with its frame from below, then reinstall the blade upside down. The teeth of the saw will cut through the pipe from the opposite side. In many cases this trick will allow you to complete a cut that would be otherwise impossible.
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.