If you are looking for something fun to do this holiday season, consider riding your bike in a parade. I'm going to be doing two this December. Sign ups are usually in November.
Find your local parade's website and there should be information on how to sign up. We usually end up being classified as a motor group. You don't have to know exactly how many people will ride. If you need a group to ride as, I'm sure you can find some aegis to fly under. I do it with the local bike advocacy group. We like it partly because we don't do any long rides so as to not compete with the local bike clubs, and they join us in the parade. It's fun.