Disc Golf is a great sport for all ages. It has effectively no barrier to entry and is good exercise to boot - it's more or less hiking with a game sprinkled in. Here's hoping it continues to amass what seems to be growing popularity.
I've often thought about how one could rig up such a thing with either lights or sound, but without sacrificing the pretty carefully designed aerodynamic profile of the discs. Not sure how it'd be possible without molding it into the disc itself... :)
I'd recommend looking for "glow golf" near you. It's disc golf, but at night. Interesting solutions from glow in the dark tape, to the buzzers, and a pretty unique experience