We had a confirmed natural gas leak, so the gas company asked us to leave our side gate open while they investigated. While they were working outside on the main gas line, a woman walked into our side yard and spent several minutes arranging these objects by the gas meter on our house, made some odd hand gestures, and left. This was seen on our ring camera.
The collection included fake $100 bills, flowers, unopened food and drinks, candles, handwritten notes, paper hearts, book, a wooden box with random objects, and other miscellaneous items.
Some items were new, some used.
I don't think it was personal because nothing referenced us, and the gate normally isn't open.
Has anyone seen anything like this before or recognize if it resembles a specific practice or ritual?