The other day I thought to add LEDs to my control panel. It occurred to me that I have a number of LED Christmas light strings. So I began taking them out of their holders. Lo and behold, 12 LEDs with resistors already in place. I thought it was great. Most of my electronics come from salvage. I know it's probably better to just buy them online, but if you happen to have some Phillips LED Christmas lights (or any others most likely) then look no further.
I wasn't sure where to post this, so please let me know if there is a better place.
Josh