The lesche tool works great although if I am on someone's well manicured lawn I use a steak knife to cut the plug. The blade is thinner than the lesche tool and the plug edges fit back in the lawn a bit tighter and neater.
I like that idea. I have been thinking that an "afro pick" (improper reference?) would be nice to blend the grass around the plug. I saw a plug cutter at Lowes but think it's no where near as versatile.
Marty