I'm with the other folks who suggested pork shoulder. You can add it into other recipes as well, if you get sick of BBQ (*gasp*)
One thing that went over really well with my girls, was adding the smokey pork into mac and cheese.
You also could do a large batch of chili.. Or you could feed them like my father did, with his left over c-rats and MREs (Meals Ready to Eat).
Pioneer BBQ | KCBS | 22.5" WSM |Cyber-Q | Weber E-310