We picked up a pink foam visor from the craft store for $1 and some self adhesive foam animals for around $3 for about 50 of them. They also carry a wide variety of foam letters, shapes and animals in a bunch of different colors so you can personalize this any way you like. We choose a pack of animals that contained monkeys, frog, cats and dogs which just so happens to be her favorite animals.
I let her select the animal that she wanted to put on, then I pulled the back off to expose the sticky side and let her place it on the visor where she wanted.
She was very meticulous in her choices and layed them all out in front of her to get a good look at her options.