Here is a repeat of the info that was posted much earlier in this thread...
FISH EXTENDER (FE) INFO
(Plagarized and modified slightly from Deb T. 4/17/11 Dream Cruise Meet thread......Thanks Deb )
For anyone who's new to the Fish Extender Exchange, here's what it's all about:
Beside every cabin door is a large silver fish, seahorse, etc. with an indentation in the back for cruise personnel to leave information, invitations, etc.
DISboarders have taken the silver fish one step further... by creating hanging pockets (much like cloth letter holders) to hang from the fish - thus the name, "Fish Extender". The Fish Extenders (FEs) can be made of practically anything (cloth, plastic, paper gift bags, etc.), as long as they have at least one pocket that can hold surprises. My FE is just a plain little canvas bag that I had a DisSigner make a graphic for and I ironed it on.
Then, each "Cruise Meets" thread (such as this 4-1-12 one) organizes a little gift exchange during the cruise. People sign up by giving their cabin number, names of everyone in their cabin, and ages of the kids so that everyone will know how many goodies to bring and where to deliver them. Some people give one gift per family, some people give a little gift to each person. It's totally up to the giver to decide what to give and when to give it during the cruise.
There are several threads that discuss ideas for FE gifts. Some gifts are from Dollar Stores, some are handmade, and some are bought in bulk from websites that sell trinkets like the Oriental Trading Company. Often, they are stickers, candy, glow sticks, lanyards, etc., with themes such as pirates, beach, cruise, tropical, hometown, holiday, etc. The main idea is just to have fun finding little goodies in your FE throughout the cruise. Kids LOVE running back to their cabin to see if anything's been left in their FE. As an adult, I have to admit that I love it, too!!!
If you'd like to join in on the fun on our cruise, please let me know. Since some people travel earlier in the week prior to a cruise, we should close the list by March 1, 2012 to give everyone time to purchase gifts and pack them. You'll also need to print the final list of participants and pack it with your gifts so you'll know where to deliver them once you're onboard the ship.
If you have any questions, please don't hesitate to ask. Also, this thread has tons of info and ideas about FE Gift Exchanges: http://www.disboards.com/showthread.php?t=1219607
If you'd like to sign up, you can either post your information here on this thread, or send me a Private Message by clicking on my name in the upper left-hand side of this box and then click on "Send Guarn3md a Private Message". I will keep participants updated with details through Private Messages, but will keep a running list of DIS names on this thread.
Debbie
Now to try to hide the "evidence" so the kids don't see it when they wake up in the morning...then it's off to bed. Feels good to have that started, though they're nowhere near done. Can't believe we're at 45 days!!! 
Also, we are bringing an entire suitcase that is cruise-only stuff (fish extender, FE gifts, pillowcases, pirate costumes, etc.) because we are surprising our kids with this trip, and it's two-fold. First surprising them with a trip to Disney (MK the day before cruise), then surprising them again with the cruise the next day (returning to the parks after the cruise). So this second bag will be off limits as just "Mommy and Daddy's stuff" on that first day. Ha! Also, my daughter will be 10 in March, so she might be hanging out with your girls. 
