HERE and HERE. I did them slightly different then either, but love how they turned out.
Kristen's, cricut. She helped me cut out all of the signs, banner, cupcake toppers, and invitations. Kristen is the best!
A simple way to add Mickey Mouse was a platter of veggies using one place and two bowls to look like Mickey's head. Simple, healthy, and cute!
Do you see what my son is wearing too? He wore his Halloween Mickey Mouse costume I had made him. He looked so cute dressed up as Mickey Mouse through the whole party.