Thanks for the answers to my questions.
More than likely, he'll pass this material just fine but since he ingested it only 10 minutes ago, there's sufficient time to induce vomiting if you don't want to worry about it causing an obstruction.
If you have fresh 3% hydrogen peroxide (it should bubble and fizzle), then 3 teaspoons can be given. Mix it with bread and then walk him around for 15 minutes. The dose can be repeated if necessary.
Not all dogs will vomit when peroxide is given but most will.
If you're unsuccessful and/or don't have any peroxide to give him, then feed another meal with fiber (whole wheat bread, for example). Walk him more frequently than you normally would which can help to increase transit time.
Monitor the stools for evidence of the material which may show up as soon as 12-24 hours or may take longer to pass through his system.
Signs to monitor for an obstruction will be vomiting, disinterest in food, lethargy and/or abdominal pain.
As I mentioned above, most dogs will be able to pass this sort of thing (even a small dog) with no adverse effects at all but at least you have the option of trying to remove it now.
I hope this helps. Deb