You can use anything heavy like a brick block or a wood stump, and top it with a plant.
Do you have a dog or cat? You can get statues.
https://www.amazon.com/ornament-decoration-figurine-Concrete-sculpture/dp/B0BT5Q4Y9H/ref=sr\_1\_3?crid=GKV0CNV8MWK0&keywords=heavy+dog+statues&qid=1681928854&sprefix=heavy+dog+statues%2Caps%2C442&sr=8-3&ufe=app\_do%3Aamzn1.fos.c3015c4a-46bb-44b9-81a4-dc28e6d374b3