Quiet on a cob.
My mom will occasionally make corn on the cob for us, wrap them individually in seran wrap, and store it in the fridge for us to eat at our leisure. She did this for me growing up, and now she does it for our boys.
Nothing else gets Pup to stay quieter than giving him a piece of corn on the cob. The jumper, nope. A new toy, nope. His brother, definitely nope. But corn on the cob buys me about 30 minutes of pure, happy, occupied silence from this little guy.
Well, except for the occasional yelp of joy. Hehe.