It might not stick very well with a 5 year old, but it's never too soon to start teaching things! Growing up my folks sent us into the immediate area with a scavenger hunt for local flaura and my dad set up orienteering courses for taking/following bearings with a compass. Maybe since he's younger both activities would have to be supervised/guided, but I think as a five year old the words "scavenger hunt" must be enticing and the opportunity to play with a compass would be cool? Tough at that young age though.Relax, hike/explore the area around camp.
Could use some ideas for how to entertain a 5 year old boy. Kid is super active so trying to sit him down to teach camp stuff is tough lol.