There is a lot of good advice given here already. Utilizing council and district campouts is a good introduction for new scouts. However, the programs and activities tend to be somewhat repetitive. Parents tend to balk at expense due to the same events offered at each camp. Boys just want to be outside and never tire of BBs, archery, fishing, etc. and will always have a good time. It is important to promote the age specific camps (i.e. Tigers - family, Cubs family and resident camps, Webelos Webelos resident camp).
Now then, IMO there is nothing that can replace the well planned and ra