Disney has lots of different popcorn containers and other souvenir items. In March, each park had its own bucket (except DHS).
Magic Kingdom: Mickey and friends are in the marching band.
Magic Kingdom: They also have the Jack Skellington Coffin popcorn bucket at the stand in Liberty Square. (This photo is from
Disneyland where it's used a meal container, but it's the same bucket.)
Epcot: Mickey and friends are watching Illuminations.
AK: Mickey and Minnie are on a safari and Donald's nephews are riding Kali River Rapids.
DHS: Clear bucket with Hollywood Directory Mickey (only available at the kiosk at the entrance to the Extreme Stunt Show). Otherwise, the other popcorn carts all had the R2D2 bucket. The popcorn bucket is larger than the meal container. The look is the same.
DTD: Lots of the attractions from the MK. I
think this one might have been at MK previously, but I didn't see in March (I found it at DTD).
Holidays: During Halloween and Christmas there have been holiday themed specialty popcorn buckets. In previous years they had a Snowman Mickey bucket, but last year's was a Santa Mickey.
The Halloween bucket has been Ghost Mickey (for several years).
It's not a popcorn bucket, but DHS' Starring Rolls also has a pirate chest with cupcake.
Finally, if you ever happen to get over to Disneyland, they have a really cute Lightning McQueen popcorn/meal bucket. He's normally red, but they also had a special blue one for the holiday season.