since it sounds like many are hand making items, i'd recommend having a max like 20 cabins and if it goes above that, split into 2 groups. That way even if there are only 25 cabins, everyone can still have about 12 cabins to do versus having one group of 20 & one group of 5. I also am new at this so I don't know how many folks sign up at the end of the deadline. This way if someone is making an item, they know at max they will make 20, but may have extra depending on if we get split. I'm also happy to cut off and let a new group form, but I don't know if that will mean we have a huge group and the second group will be small. I think it is just hard for those that are making items, I know personally I wasn't even able to get enough supplies to give everyone the same exact thing, but I convinced myself that variety is the spice of life

My other thought was to make a set amount and anyone added later just gets something not hand made, but it doesn't seem fair that way...but I suppose like you said, it is all in good fun!