Impact Lansing is a one-week long summer/mission camp for middle-schoolers that are entering 6th grade, to young teens entering 9th grade. During the week, attendees participate in service projects around Lansing where they can make an impact on the local community. It's not all work though. During the afternoon there are games, and in the evening there are powerful worship services.
This year's camp is from July 14th through July 20th. You can find more details including how to register on the Impact Lansing event page.