Gender Reveal πŸ’—πŸ’™ Baby Shower!!

So we've decided to do our gender reveal at our baby shower in two weeks!! We are super excited but we also want to incorporate some gender specific things for after we reveal the gender. πŸ˜„ My mother-in-law is doing all the planning for the shower and she doesn't know the gender, so gender specific things would have to be brought by us. What can we do to take it from a gender neutral party to a gender specific party without stepping on her toes with all the planning she's done?! The shower will be held inside a public pavilion so our things can't be seen until after we do the reveal. Any ideas would be great!! Thank you! 😍