Movable artificial objects are handled differently from loose natural objects.
Plain-language guide · Rule 15.2. Use the current official text and your round’s Local Rules for a ruling.
What to know
You may generally move them. If doing so moves the ball, replace it without penalty. Boundary objects and integral objects have different treatment.
On the course
A loose rake resting against your ball can normally be removed carefully. Follow the replacement procedure if the ball shifts.