What about an Irish Chain? I've just started a single Irish chain quilt for my niece that has Sunbonnet Sue appliques in the center of the solid blocks. I'm strip piecing it, but you definitely could use charm packs.
Ohhh... I've never worked with pre-cuts so I'm not sure what a charm pack's size is, but I found something that says it's 5". If that's the case, I'd recommend Amy Gibson's Cross My Heart pattern on Craftsy. Super cute!
http://www.craftsy.com/project/view/...sj&_ctp=156538