Make frisbee golf disc's visible in dark (hacked)

It's winter time, but for many it is still Frisbee/disc golf time. Here up north, we don't really have daylight at all some of the winter. But the weather have been very nice. So we still have been playing some. One of the biggest problems is finding our discs in the dark. Unless you have a glowing disc or it is moonlight, it's nearly impossible to find them. We have tried led lights. Led's are both clunky and expensive in use. Those small batteries cost a lot, sometimes they fall of and changing discs is a hassle.

I found myself the best solution to this problem. I bought some diamond tape and put some on both sides of the discs. Basically diamond tape is a kind of tape that is reflecting light. Diamond tape is very light and does not alter the flight characteristics of the discs. It's also very cheap. When i go looking for them with my headlight on, they light up like beacons. They also kind of glimmer so you se them really good. I can also see where they go, at least most of the time. It also helps under water.

No need for UV-light or glow in the dark discs. Just pick it up from the bag and throw it.