A light tap of my fingers pushed the door open.

There was a light tap at the door and the doctor came in.

There was a light tap on the kitchen door before he stepped inside.

A light tap on the door and an assistant stuck his head in.

He gave his cane a quick light tap on the earth.

It might be a girl's light tap at the door.

A light tap on the door made them all start.

There was a light tap on the door of his cabin.

A light tap at the door prevented him from asking any further questions.

And, one minute later, there came a light tap on the door.