@dcz Ok if the goal is not just to wander around with kids and have fun then yes, need something to track the progress towards the goal set. As for getting lost - definitely need something with a map and some positioning, whatever is available (I remember once using kindle 3g with its free whispernet and mobile positioning from google maps).
@ruff Thanks :) I think some people use gadgets to not get lost, or to have proof of their achievements. I'd like to have one to ~~help me git gud~~ tell me if I'm getting faster though :)