For a few days you might need two cars if the Hubby's don't want to do any of the shops and you want to explore the shops futher out in the country. But there are also antique/misc shops out there too. Maybe you could alternate stops.
But at Kitchen Kettle there are a few shops they maybe interesed in and two or three fabric shops all within walking distance. There is a weapons museum for one, may be good for an hour or so. I guess it might depend on thier interests.
Guess I'm pretty lucky, DH will go to some of the shops with me and sometimes he sits on a bench and strikes up a conversation with other husbands waiting for thier wives or I'll pick a place that we pass and I think he might enjoy.