If these ordinary objects were all alone in space they would go flying together as they are indeed attracted by gravity. All matter is attacted to itself and the fore is constant. As a matter of fact the force is theorized to be infinite but because of the inverse square ratio of force to distance it very quickly weakens to an inperceivable effect, so it’s all about distance and size. In the case of some objects on the table if you look the objects are pinned to the table due to extreme gravitational force from the bulk of the planet and all underneath and the gravitational pull is present and pull between the two objects but between the pull of gravity and the friction of the table that gravitational effect is neglible to the point until now now one may have enough thought there was a force between them.