Is such a thing available? If so, what would you recommend and what might I expect to pay?
Lately, I have been taking longer and longer rides to/through increasingly less familiar territory. Sometimes I like getting "lost" as long as I don't actually get lost - something I've done a time or two - not so lost that I was in danger of never finding my way home, but, turned around enough that I didn't know whether to turn this or that way.
On a bike, each wrong 'that way' can cost you tons of time if each wrong turn take you 3 or 4 miles to determine that you should have gone the opposite way.
It's not a pressing issue, but a GPS unit would be a neat and fun toy.