1 to 2 weeks Mission Trips: Sr. High: $1000 to $3000: Clean Water/Sanitation: The Fuller Center for Housing: September - Browse by Continent : MissionGuide.global1 to 2 weeks Mission Trips: Sr. High: $1000 to $3000: Clean Water/Sanitation: The Fuller Center for Housing: September - Browse by Continent : MissionGuide.global