Great ideas above!
Or you could try chicken skin, dried in the oven, or bought from somewhere like zooplus.co.uk. Sounds gross, but it's one of the few things that Sherlock will bother to eat when we're on walks - unfortunately he's not food oriented at all, so we've spent the last year trying to find things to tempt him with!
I also bake liver - don't mix it with anything, just cut it up and put it in the oven on a low heat for a couple of hours. Then I freeze what I'm not using that day.
That pic of him at 7 weeks is just adorable. I can't wait to see more when you finally get to take the little cutie home!!