Small parts can drop through oversize router-table inserts or instantly tug fingers into the bit. To solve both problems, first drill a hole slightly larger than the bit diameter in a piece of 1/4" plywood, and clamp it to the router-table top for near-zero-clearance support. Then keep your fingers safe by gripping the part with a handscrew. The jaws of these clamps can be angled to firmly grasp odd-size parts and hold them flat against the zero-clearance top.