Baby Shower decorating ideas?

I am having a baby shower in like 12 days, and i need some decorating ideas, it's a boy and i'm kinda doing the theme in rainforest animals (blue and green) It's gonna be real low key, no games or nothing, just eating some food and opening gifts :) but i want the decorations to be real cute, i have some balloons streamers, and plan on having a diaper cake anything else? please help first baby shower!!