In our series on Beetle Kill Pine, we showed you how some designers are trying to find useful functions for undesireable, fungus-damaged wood. Another tree with fungal woes is Pecky Cypress, whose innards are scarred by rotted-out voids, making its gap-laden boards unsuitable for say, smooth tabletops.
Instructables Community Manager Mike Warren, a/k/a/ Michaelsaurus, has a workaround: He fills the voids with resins, a technique you've probably seen before. But Warren doesn't use any old resin—he adds photoluminescent powder to the mix, producing a filler that "charges up in sunlight and emits a cool blue glow when in partial or complete darkness."
The full Instructable is here, but peep Warren's cool video first: