This majikal being lurks in rural mailboxes and snuggles in the staples that hold together savings passbooks.
It seeks balance when it detects the arrival of a check, or threshhold exceeded in the bank-balance, that signals a hubristic human intent to undertake an improvement project, such as, say, installing the bloody perimeter fence or buying a new tractor.
The BG then works its majikal way with water and motors. Wash out the driveway, punch holes in the barn roof, erode the seals on the car that needed to last just two more years, burst the pipes. Or a Budget Gremlin water-motor twofer specialty, kill the well pump.
Soon the offending check or excessive bank balance has evaporated, and normalcy is restored without any offensive infrastructure changes. The Budget Gremlin returns to lurking. He is always with you.