You know, this may actually be a great idea for a new line of specials or such.
Sets containing a child with parent doing something! It may be a breath of fresh air from the usual stuff since it would always come with a kid along with it!
Some examples that could be possible:
-Father and son fishing, including an adult size and child size fishing rod, some fish, a bucket and two fishing chairs.
-Mother and son cooking, could come with an oven and a plate of gingerbread men cookies to put in it, as well as a rolling pin and other stuff.
-Father and daughter playing the blues. Both would be nicely dressed and there would be an adult and childsize saxophone. Black clickies might be fitting here.
-Mother and daughter tea party. Dressed in victorian fasion, the set could come with a nice table and two chairs, a teapot, some cookies and two cups.
-Father and daughter surfing. Cool surfer dad with a little girl in a wetsuit with surfboards.
-Mother and son painting, both could wear an apron covered in paint, and there would be both adult and child size painting supplies, maybe the child's painting could be a smaller and more crude version of what his mother paints.
-Father and son practice fighting. Medieval noble father in simple clothes with an adult size wooden sword, and a medieval noble son with a child size wooden sword. Could include a smaller combat dummy as well.
-Mother and daughter shipwrecked. A makeshift raft with mother and daughter in torn clothes with a treasure map, compass, pistol, sword, lantern and some fish.
Seem to be so many possibilities and they could really go against type with some, but wouldnt need to go against type for all just for the sake of it.
If there'd be 6 such specials each batch for example there could be 3 with a dad and 3 with a mom, and of each one could be against type.
And always one of them should be doing something with a child of the opposite gender to promote that as well.