Even if you must sneak out before dawn so as not to get caught, do it! Clipping fronds and ferns is not really stealing. Leaves grow back. The trick to the chicest arrangements is choosing different textures, colors and heights. Stuff your pickings into a long vase filled with water, bottom leaves stripped so as not to contaminate the water.
Think of this as an architecture project. Take a look at your space and then use your imagination. Leaving air between leaves allows imaginary butterflies to fly through. The goal is to for the width and height to fill the space on a hall table so every time you walk by, or go up and down the stairs, wherever your interior path may lead -- a jolt of jolly green pleasure hits you.
Natural, fresh, sometimes with a delicious aroma, this easy-to-DIY project breathes life into your space. The arrangement can actually make you feel different, like you are in the house that you deserve to be in.