Was at Walgreens the other day and was digging through their odds and ends sale bin. Found a set of LED's for $3.00. What the heck. They're portable with no wiring or drain on lipo and can be velcro'd. Uses replacement calculator batteries. Come in Red, Green and Blue( More like white) . Can be switched from steady on to slow flashing strobe to fast flashing strobe.
Will see what they look like on the DHC Beaver or GP Escapade.