We had a Mickey Mouse Clubhouse party for my dd's second birthday. It was so much fun!
My cake turned out horrible.

I didn't let the fondant or rice krispies treats sit long enough, and then I panicked as things started to not work. It ended with my pregnant hormonal self sobbing at how I ruined my daughter's childhood because of the cake.

But
here it is.
Edible Arrangements has a
Mickey arrangement. I was too cheap to pay for it though, so my local store let me buy the Mickey part for $10. I just put strawberries in it. I actually still have it. LOL
DD wore a
Mickey Mouse Clubhouse shirt. And all the kids had the party Mickey ears that she's wearing in the picture.
I printed out a
big picture of the clubhouse for the kids to have their pictures taken. I don't think anyone actually posed with it, but people loved it as a decoration. The way I did it was I googled a picture of the clubhouse. Then I found a website (can't remember which site) that let me upload the picture and choose how big I wanted it. It then made a file where it printed part of the picture on different pages, and I taped them together. I traced the big picture onto white kraft paper and painted it.
The goody bags were all Mickey Mouse Clubhouse stuff from Party City. This was almost 2 years ago, so I'm not sure if they still carry it. I think we also had Mickey shaped cookies. I didn't do any organized games because the kids were too little. They just ran through the house and acted like nutjobs.
Right now I'm planning a Mickey's Not So Scary Halloween party for my daughter's friends. One of the things I'm making is the caramel Mickey pumpkin apples. But I also found
this that I'd love to make at a non-Halloween time. It looks like the ears are marshmallows.