Probably one of the most useful contraptions I put together was a chicken plucker. I found an old cabinet with a side door. For the top I nailed on sheet metal and cut out the middle to accomdate the grate and spacing for the rubber plucking fingers on the rotating drum. A simple motor with belt ran the gizmo and did the job well. Another odd thing I have is the inside of a dryer that is mounted to rotate. It's great to throw in peat or compost to filter out small particles for toping to seedling soil mix. A wheelbarrow underneath as it roates catches the droppings out the holes of the dryer drum. It's odd looking, but it works. For a turkey sized scalding tank, I took a used inside of a hot water tank. With a reciprocating saw, I cut the top, and the tank is about 3' high. It's ideal to put over a fire pit outside for scalding anything up to the size of about a 50 lb. turkey! I didn't make it, but have seen meat smokers made of the inside of a hot water tank. Pretty versatile way to recycles these tanks. One could also cut one lengthwise to fill for poultry or animals. The big blue plastic 55 gal. drums I cut them lengthwise and leaned against the fence in the coop with a brick at the front so they slant without toppling. These are great for ducks water, and easy to change for refilling. What resourcefull useful gizmos did you make to use around the homestead??