Camping and tubing in northeast WisconsinWhere is a place to camp and go tubing? - Kay, Manitowoc, Wis.
You can camp and tube in a lot of places: See Tubing a lazy river.
You can get more ideas from Travel Wisconsin's Rafting and Tubing Directory.
But since you live near northeast Wisconsin, the cradle of rivers, let me suggest the Wolf River. And last month, at an outdoor adventure expo, I met the folks at Wildman Whitewater Ranch near Athelstane. Looks like an interesting place, with cabins and camping, and they offer a "lazy river'' tubing ride on the Menominee River as well as rafting on the Peshtigo. If you go, let me know how you liked it.