WDW Monorail
Well-Known Member
You can make your own twinkle strings with stringers and individual twinkle bulbs. Unless you can find the 25 or 50-socket strings at your local big-box store, you'll have to order a whole spool of string from a commercial supplier. The smallest I've found is 500-feet. The good part, though, is you can make custom lengths of string that suits your purpose... just don't have too-many bulbs on the same string (< 100 per string is safe with 5 watt bulbs).
Here's links to the goods from Action Lighting, but you can find them elsewhere too:
Twinkle bulbs: http://www.actionlighting.com/c7-twinkle-christmas-bulb/
Light stringers: http://www.actionlighting.com/c7-c9-string-light-500ft-rolls/
Make sure you match the bulb type to the socket in the stringer: C7 bulb in a matching C7 socket. Same for C9--use C9 sockets. C7s are the same base as standard night lights and C9s are like what's used in fancy candelabra light fixtures--the BIG old-school type of Christmas lights.
I have an already made set of those same twinkle bulbs. I only used the string once for Christmas a couple of years ago. I had never seen the individual C-7 or C-9 bulbs for sale but I may end up purchasing them and screwing them in to attach-on sockets that I have. I have a couple thousand feet of SPT-1 on which I can attach the bulbs anywhere I desire.