What is the most impressive example of Redneck Engineering you’ve encountered?

One of the most impressive examples of Redneck Engineering I’ve encountered is a clever hack where a person used a garden hose to create an air conditioner for a vehicle. Instead of investing in a costly HVAC repair, they looped a garden hose around the car’s interior, connected it to a cooler filled with ice and water, and attached a small pump to circulate the cold water through the hose. This setup effectively created a cooling system by running the chilled water through the hose, cooling the air inside the car as it flowed over the hose. Such an inventive approach demonstrates the resourcefulness and problem-solving skills characteristic of Redneck Engineering—using available materials and creativity to address a pressing need efficiently and at minimal cost.