I love your daughter's plan! Enjoy!
My husband travels a lot so I try to do special things with my 3-year-old daughter when he is gone. During this past winter we would go to Subway and pick up dinner and have a picnic in the living room--throw down a blanket and eat on the floor--3 year olds love this! This summer we'll picnic outside. I let her pick out nail polish from the store (instant dry variety for my sanity)--she usually picks blue or purple or green--and we paint our nails. Of course the zoo, Children's Museum, movies, trip to a new playground/park are always hits too. Sometimes we bake together or make a pizza. I rarely use our jetted tub in our master bath, so I often offer to hop in the tub with her and add some bubbles and let her play in "the big tub" as a treat.
Have a fun time!!
Have fun!