Since I can’t see any photos or detailed descriptions, a few specific details often help to solve the mystery.
Helpful clues for identification:
Appearance: What color, shape, size, and texture is the object? (e.g., metallic, plant-like, stone-like, rubbery)
Location: Was it lying on the ground, buried, hanging from a plant, or near the shed/tool area?
Weight & feel: Is it heavy or light, hard or flexible?
Assumed function: Are there any visible seams, switches, threads, markings, or holes?
Common “strange” finds in the garden:
Garden & irrigation equipment: Old hose couplings, in-ground sprinkler heads, robotic lawnmower boundary wires, or ground anchors.
Animal/Natural Objects: Fungal mycelia, gallnuts, insect cocoons, ossified remains, or unusual minerals/slag.
Historical/Recycled Items: Old brickworks remnants, horseshoes, tool parts, buttons, or pieces of lead pipe.
Pest & Plant Protection: Bait boxes, mole deterrents, or fertilizer sticks.
Please describe the object in more detail – perhaps we can track it down together!