1.5" mini glow sticks from www.extremeglow.com
(green is best)
Lindy Nite Flite Lites from www.everythingdiscgolf.com
(red is best)
Clear duct tape, clear packaging tape works okay, but harder to remove, use 2 strips in an "x" pattern to secure the mini glow stick / led light on the bottom and in the middle of your disc. Seems when they're placed on top they're more likely to come off when they hit something. Darker discs I'll use light up the top and bottom of the disc.
I bring 4 or 5 discs along.
Depending on how long we're going to play, we'll use 6" glow sticks to light all of the baskets or a mini led flashlight.
If we're playing a day round, then a night round, I will hang a 6" glow stick in the baskets as we're playing, so the next time around the baskets will all be lit up. If we're just playing glow for the night and we're not out there earlier, I have a few mini led flashlights that I taped some wire onto to form a hook, so when we get close to the basket, whoever's closet can light it up.
On real dark nights its nice to have a glow stick lit on the the side of your bag, it can easily get lost if you're taking time to look for a lost disc, then forget where you set your bag down!
When you play though, bring along extra glow sticks / lights and tape, once in awhile you'll hit a tree and they might begin to fall off or will completely come off.
They make the lights where you can punch a hole in the middle of a disc and push a light into the hole, but I've tried these, they turn your disc into garbage, they totally lose their natural flight pattern and its very frustrating!
If you have glow discs, finding an inexpensive 6" portable blacklight to wand over it before you throw works so much better than a camera flash.