To repair small holes in drywall (under 1/2 inch), follow these steps:

1. Assess the area to remove any raised edges by sanding gently.
2. Fill the hole with spackling compound or lightweight joint compound using a putty knife. Apply enough so it slightly rises above the surface.
3. Let the spackling dry completely.
4. Sand the area smooth with fine-grit sandpaper until flush with the wall, then wipe away dust.
5. Paint over the repaired spot with matching paint to blend it in.

This process is simple and works well for nail, screw, or small accidental holes without the need for drywall patches or tape. Tools needed include spackle, a putty knife, sandpaper, and paint supplies.