I finally broke down and ordered 4 boxes of halves for my wife and kids to sift through. I've been focused on pennies with the Ryedale I bought in January.
They had some decent success and found 5 keepers (4 silver and a decent proof):
1963 D
1967
1967
1976 S
1979 S Proof
I joined the family for a bit and actually found the 1976 S. This was our first time doing this and I thought the 1976 S looked a bit odd so I tossed it to my son who figured out it was actually 40% silver. Kudos to my little numismatist!
I'm just glad they did so well given how I've read on the forum that many of you will go 5, 10 and even 20 boxes with nothing. Needless to say my kids are hooked are already asking me to order some more.