In my younger days, I stopped a crazed maniac from world domination with just a piece of bubble gum, a shoe string and some rubbing alcohol. I heard they made a TV series based on my misadventures....
Hey, I remember that series! Wasn't it Don Adams in the lead role, battling Chaos? Did you ever get that "cone of silence" thing working right?
I've made a variety of tools, some as temporary improvs, and some as permanent tools. Here are some examples:
1) A #6 cable reel will both mount 4 receptacles in the core, and carry 100' of real extension cord. Instant spider-box;
2) A collection of 12" threaded nipples, plastic threaded couplings, and certain bits from the garden department gives you a tool for boring under drives and walks. Hook hose to one end, and let the water do the work for you. Add nipples for length, as needed;
3) 6-gal bucket, rigid paint liner, and toilet seat, and some kitty litter solves a critical issue on some job sites; and,
4) Glue a tape measure to the side of your truck, and you have one great assist to bending pipe.