Best kong stuffing for a puppy?

Hocus is just over 9 weeks and I want something to keep him busy for a little while!

Don't want to buy kongs stuffer if I can help it.
Was just going to use his normal food soaked but seems a bit boring?

Any ideas?

(sorry if this is in the wrong section)

what about bits of raw chicken mixed in with kibble?

or things like yoghurt frozen..

or banana

or tinned fish like sardines, and you can freeze them too

take a look in the diet and nutrition section, theres a few ideas in there.

Naturediet is a good one, you can mash it up with a fork. Once he's used to that, you can freeze it to make it a bit more of a challenge.
PAH do their own version, the Wainwrights range.
Just remember to introduce it slowly, and you may want to decrease his normal meals a little to compensate for the extra calories.

I make gravy ice cubes and shove them in

I make my own stuffer...., which is a can of fish and pulped veg mixed together, stuffed and then frozen.I tend to give it her in the kitchen though, as it makes a bit of a dribbly mess!

Mince is good too!

Jack had a kong this morning as I was back at work. I put in some kibble and bunged the hole up with a bit of tinned food. I am in the process of moving him over to a new food so would like to get him settled on that before introducing too many new things.