A great freebie during the Christmas season is going around to the various resorts and checking out the gorgeous decorations.
Not free but cheap - making the pressed pennies around everywhere. I believe all of the resorts have multiple machines, many with coin designs that relate to that specific resort. This can get pricey if you buy a book to hold the coins and get OCD about collecting all of the coins you see.
A freebie if you are a guest at WL - asking and being the Flag Family at WL.
A freebie if you are in the MK and a veteran - stop in at City Hall and inquire about being part of the daily Flag ceremony.
Very free - talk with the CMs, they are usually wonderful and full of great WDW info and trivia bits.
WL freebie - They have a walking tour of the resort.
DTD - often have afternoon 'concerts'.
DTD - In the
Lego store there are usually blocks to build with.
FWC - Check out the stables and see the incredible horses used in the parades and that pull the MK trolley.
AKL - Can usually find a CM near the animal observation areas that will give lots of info about the animals and culture.