Do you live somewhere with lots of rainy or foggy weather? Do you have a hard time navigating your long driveway? Do you love two-step DIY projects as much as we do? Well, here you go: Turn old CDs into driveway reflectors with a microwave and a nail.
Driveway reflectors are cheap, but junked CDs are cheaper. Take advantage of your CDs' reflective surface and re-purpose them in your yard.
Puzzledd at Instructables suggests using old disks as reflectors in 44 Fanciful Uses for Dud Discs (Check out the whole list if you have a second).
It's a one-step project (Step 1: Nail CD to post). But if you've got an extra 5 seconds, you can get a better reflector by quickly microwaving the CD first.
WARNING: Microwaving a CD is a dangerous activity, and should only be done under controlled conditions by a responsible adult. You risk killing your microwave and burning yourself by doing this.
But if you are careful and follow these instructions from WikiHow, you can create a super-reflector, thanks to the distinctive pattern that emerges on a zapped CD.

White Enamel Flatwa...
I guess this is effective, but it's ugly as heck.
Thinking about how many times I've tripped over tree roots during not so sober bonfire nights when younger, these would make great night time trail markers.
How very........ redneck
A little glue and crafting supplies and you could probably make it look a lot less like a CD nailed to a post.
The close-up of the microwaved disc is pretty - kinda reminds me of the age rings inside of a tree.
This is the dumbest thing I've seen besides the "Hell Yeah" post on Apartment Therapy.